Mathematics High School

Justin is taking a taxi cab to pick up his car from the auto shop. The taxi charges an initial fee of $5.00 and additional $2.50 for each mile the taxi drives. Write an equation using x as the number of miles, to determine how many miles the taxi drove if Justin spent $25.00. Use your equation for the number of miles. (Define the variable please, write an equation, and solve & label:))

Answers

Answer 1

Answer:

x = 8

Step-by-step explanation:

Given the initial fee of $5.00, and the additional cost of $2.50 for every mile the taxi drives:

We can establish the following cost function:

C(x) = 2.50x + 5.00

Where:

C(x) = total cost of taxi fare (same as the variable, "y" in linear equation)

x = number of miles driven

$5.00 = initial or flat fee (same as the y-intercept, "b," in linear equation).

We can find out the number of x miles the taxi drove for the $25.00 total cost that Justin paid for the fare:

C(x) = 2.50x + 5.00

$25 = 2.50x + 5.00

Subtract 5.00 from both sides of the equation:

$25 - 5.00 = 2.50x + 5.00 - 5.00

$20 = 2.50x

Divide both sides by 2.50 to solve for x:

[tex]\frac{20}{2.50} = \frac{2.50x}{2.50}[/tex]

8 = x

Justin spent $25 for a taxi ride that travelled for 8 miles.

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​

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