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iogann1982 [59]
3 years ago
13

In the function y = 1.25x + 5, y represents the cost of a foot of cable and x represents the number of feet. How much does the c

ost of cable increase for every foot?
A) x
B) $1.25
C) $5.00
D) $6.25

PLEASE I WILL MEDAL
Mathematics
2 answers:
klemol [59]3 years ago
7 0
It increases by B $1.25 every time
xenn [34]3 years ago
6 0

Answer:

The correct answer is B). $1.25  

Step-by-step explanation:

The function is given to be :

y = 1.25x + 5

where y represents the cost of a foot of cable and x represents the number of feet

Here , 5 represents the initial cost of the cable

And 1.25 represents the cost of the cable which increases for every foot

Thus, The amount of cost of cable which increases for every foot = $1.25

Therefore, The correct answer is B). $1.25

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A law firm is going to designate associates and partners to a big new case. The daily rate charged to the client for each associ
Semenov [28]

Answer:

$8700

Step-by-step explanation:

Associates cost $800 each, you have 9 associates, so multiply 800 by 9 which gives you: $800x 9= $7200.

Partners cost $1500 each, you have 4 partners, so multiply 1500 by 4 which gives you: $1500x 4=$6000.

Then add the two together like this: $7200+$1500= $8700.

4 0
2 years ago
Read 2 more answers
Which equation represents the line that passes through (–8, 11) and (4, 7/2)?
slavikrds [6]
A is the answer since if you graph it, it has those points, or you may just simply plug in the x points that are given and see if they equal the y number
5 0
3 years ago
Use the quadratic formula to solve the equation. -2x^2-x+7=0.
Furkat [3]
<span>-2x^2-x+7=0  
Variable with the highest degree's (exponent) constant, -2 is a, next variable's constant, -1 is b, the constant or number without a variable, 7 is c

using substitution put the numbers into the formula
</span>(-b±√(b^(2)-4ac))/(a^(2))

(-(-1)±√((-1)^(2)-4(-2)(7))/((-2)^(2)) simplify 

(1±√(1+56))/4

1±√(57)/4 is your answer
8 0
3 years ago
You and five of your friends ordered your tickets online together. JetBlue ticket prices cost $289 round-trip including tax. The
baherus [9]

Answer:

y= 288x + 7.99

Step-by-step explanation:

# of tickets : x

y = 289x + 7.99

⬇️ _________ put in y = mx + b

y = 289(6) + 7.99

⬇️ _________ plug in

y = 1734 + 7.99

⬇️ _________ Add

y = 1741.99

HOPE THIS HELPS! (:

5 0
2 years ago
(a) Derive an equation of the line passing through the points A(0, 545) and B(4, 726). (Let t be the independent variable and y
a_sh-v [17]

Answer:

The equation of the line is y=45.25t+545

Step-by-step explanation:

The general for of a line is:

y=mt+n       (1)

where:

m is the slope of the line and m is the intercept with the axis of the dependent variable, y in this case.

In order to obtain the value of the slope (m) we can use the corresponding slope formula:

m=\frac{y_{2}-y_1 }{t_2-t_1}         (2)

where t_1, t_2, y_1 and y_2 are the corresponding coordinates of the given points. In this case:

t_1=0\\t_2=4\\y_1=545\\y_2=726\\

Substituting these values in equation (2) we obtain:

m=\frac{726-545}{4-0}=\frac{181}{4}=45.25\\m=45.25

Hence, the line equation is now:

y=45.25t+n     (3)

Now to obtain the value of n you can follow two options:

  1. You can substitute one of your points, A or B, in equation (3). In this way, you will obtain an equation where the variable is n

Note that for this question, it is easier to select point A because of having the independent variable equals to zero t=0. Hence, substituting point A in equation (3):

45.25*0+n=545\\n=545

Therefore, the line equation is: y=45.25t+545

The second option to find n is to think of the meaning of the <em>intercept</em>. The <em>intercept </em>of a line is defined as the point in which the line crosses the axis of the dependent variable, which also means that the value of the independent variable for this point is zero. From this, we could have automatically said that n is equal to 545.

See the attachment for a plot of the line.

7 0
3 years ago
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