A construction crew is lengthening a road. Let y represent the total length of the road (in miles). Let x represent the number of days the crew has worked. Suppose that x and y are related by the equation y=59+4x. Answer the questions below. Note that a change can be an increase or a decrease. For an increase, use a positive number. For a decrease, use a negative number.

What was the road's length when the crew started working? miles

What is the change per day in the road's length? miles

Question

Mathematics

Stella Berger

1 June, 21:44

A construction crew is lengthening a road. Let y represent the total length of the road (in miles). Let x represent the number of days the crew has worked. Suppose that x and y are related by the equation y=59+4x. Answer the questions below. Note that a change can be an increase or a decrease. For an increase, use a positive number. For a decrease, use a negative number.

What was the road's length when the crew started working? miles

What is the change per day in the road's length? miles

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Answers (1)

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Porter Romero · Answer 1

Based off of the equation, the road was 59 miles to start with. Because x represents the number of days working, and it is being multiplied by 4, the crew is changing the road by 4 miles a day.