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professor190 [17]
3 years ago
14

Krista needs her kitchen sink repaired. She pays a plumber a flat fee for an initial consultation, and then she pays him an hour

ly rate for the time he works on the repair. The equation y = 25x + 40 represents this situation, where x is the number of hours and y is the total cost. What does the number 40 in the equation represent?
Mathematics
1 answer:
natka813 [3]3 years ago
8 0

Answer:

<u>The "40" represents the flat fee</u> (for an initial consultation)<u>.</u>

Step-by-step explanation:

The equation is in slope-intercept form, y=mx+b, where the mx is the <u>rate of change</u> and the b is like the <u>flat fee, or the base amount</u>.

I hope that helps! :)

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Car rental company charges 29 per day and $0.24 per mile. If a car was rented for 7 days and the total bill was $448.76, how far
Paraphin [41]

Answer:

The car drove for 1,024 miles.

Step-by-step explanation:

x=miles driven

y=days driven

448.76=29x+0.24y

448.76=29(7)+0.24y

448.76=203+0.24y

245.76=0.24y

y=1,024

7 0
3 years ago
F(x) = -2x + 5<br> f ( ) = 13
scZoUnD [109]

Answer:

Okay, I haven't done this a long time however I believe with this you have to solve the equation by doing substitution.

Step-by-step explanation:

so, if f (x) equals 13, you replace the x in the equation to 13.

f(x)=-2x+5

f(x)=-2(13)+5

f(x)=26+5

f(x)=31

I believe 41 would be your answer. Hope this is right and it helped!

4 0
3 years ago
Aaron made a $400 purchase using his credit card. The credit card has a simple interest rate of 12% each year. How much will Aar
melisa1 [442]

Answer:  448 dollars

=============================================

Work Shown:

P = 400 is the balance

r = 0.12 is the decimal form of the interest rate

t = 1 is the number of years

Use those values to get the simple interest to be

i = P*r*t

i = 400*0.12*1

i = 48

The amount of interest charged is $48

Add this onto the balance of 400 dollars and the total amount Aaron owes is P+i = 400+48 = 448 dollars.

5 0
3 years ago
What is the surface area of the rectangular prism
AnnZ [28]

Answer:

40.5 inch²

Step-by-step explanation:

(((6×1.5)×4)+((1.5×1.5)×2) = 40.5

4 0
2 years ago
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Klio2033 [76]

Answer:78% countries

Step-by-step explanation:

5 0
3 years ago
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