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kogti [31]
2 years ago
11

GUYS I NEED HELP PLS

Mathematics
1 answer:
grandymaker [24]2 years ago
5 0

Answer:

Since there is no y-intercept start the graph at (0,0)

Plot a point at (0,0)

Move up to 14.25 on the graph since it is the slope

Then move across 1 on the x-axis

This is how you should plot on the graph.

___________________________________________________________

The slope represents the cost per meal plan

Hope this helped! :D

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An electrician charges a flat fee for each job plus an hourly rate . He charged one customer $90 for a job that took him 3 hours
lianna [129]

Answer:

let x equal the service charge.

let y equal the per hour charge.

for the job that cost 450, the equation is 450 = x + 6y

for the job that cost 330, the equation is 330 = x + 4y

these two equations needs to be solved simultaneously.

subtract the second equation from the firs to get 120 = 2y

solve for y to get y = 60.

in the first equation, replace y with 60 to get 450 = x + 6*60.

simplify to get 450 = x + 360.

subtract 360 from both sides of the equation to get 90 = x.

it appears that the service charge is equal to 90 and the per hour charge is equal to 60.

for the job that cost 450, the equation becomes 450 = 90 + 6*60 = 90 + 360 = 450.

for the job that cost 330, the equation becomes 330 = 90 + 4*60 = 90 + 240 = 330.

the numbers check out.

the service charge is 90.

the per hour charge is 60.

i believe your solution is that the electrician charges a flat fee of 90 plus an hourly fee of 60 for a service call.

Step-by-step explanation:

4 0
2 years ago
How do you know if a situation represents<br> a proportional relationship?
kvasek [131]
If the relationship between two quantities is a proportional relationship, this relationship can be represented by the graph of a straight line through the origin with a slope equal to the unit rate. For each point (x, y) on the graph, ž is equal to k, where k is the unit rate. The point (1, k) is a point on the graph.
7 0
2 years ago
HELP! (Urgent pre-calculus question.)
marishachu [46]
2. means that for every x, there is eactly one y
basically, we can use the vertical line test to see if it crosses at any 2 points

first one works
2nd one works
3rd works
4th works
5th works
they are all one to one functions



3.
easy
steps
for f(x)=?
replace f(x) with y
switch x and y
solve for y
replace y with  f⁻¹(x)
so

f(x)=(1+x)^3-2
replace
y=(1+x)^3-2
switch
x=(1+y)^3-2
solve
x+2=(1+y)^3
\sqrt[3]{x+2}=1+y
-1+\sqrt[3]{x+2}=
replace
f^{-1}(x)=-1+\sqrt[3]{x+2}
first option



4.
domain, hmm we can't divide by 0 so domain is all real numbers except for x=0
domain is (-\infty,0) \cup(0,\infty)
hmm, range
as x approaches negative or positive infinity, f(x)=5
as x approaches 0 from the left, f(x) appraoches negative infintiy
as x approaches 0 from the right , f(x) appraoches positive infintiy
so range is (-\infty,5) \cup(5,\infty)

domain is (-\infty,0) \cup(0,\infty)
range is (-\infty,5) \cup(5,\infty)
answer is the 4th option
8 0
3 years ago
Please help a sister we are struggling!!!
disa [49]

Answer:

i just need the points

Step-by-step explanation:

6 0
3 years ago
What is the value of y in the equation y-7=21
Usimov [2.4K]
Its 28!!! y=28
.....................
5 0
3 years ago
Read 2 more answers
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