maryannewashere
Answered

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The total amount charged by a delivery service is described by the linear equation y=2.5x+7, where x is the number of miles traveled and y is the total cost. What is the rate of change in cost per mile?

$10.00 per mile

$9.50 per mile

$7.00 per mile

$2.50 per mile​

Sagot :

See

  • y=2.5x+7

Compare to slope intercept form of line y=mx+b

  • Slope=m=2.5

Rate of change is slope

So

it's

  • $2.50 per mile
ItzTds

Answer:

$2.50 per mile

Step-by-step explanation:

Given that,

→ y = mx + b

→ y = 2.5x + 7

The rate of change in cost per mile is,

→ slope

→ m

→ [ $2.5 ]

Hence, rate of change in cost is $2.5.

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