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3 years ago

9

The number of years a truck is owned, x, and the cost of annual repairs in dollars, f(x) , can be modeled by a linear function.

f(x)=−110.2x+740.8 After how many years would the cost of repairs be $300?
a.3
b.4
c.5
d.6

2 answers:

sdas [7]3 years ago

7 0

Substitute 300 for f(x) and then solve for x.

Dmitry [639]3 years ago

7 0

Answer:

The answer is B

Step-by-step explanation:

300=−110.2x+740.8

x=4

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Answer:

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Step-by-step explanation:

Hello, I think I can help you with this

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$(equation1)Area=length * width\\$

Step 1

According to the question data,the length is two inches longer than its width.which means that you can take the width and add 2 inches to obtain the length, in mathematical terms

(equation 2)Width + 2 inches = length

Step 2

Now, put equation 2 into equation 1

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Step 3

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so, the width is 5 inches,

replacing this value in equation 2

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Have a good day.

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