8
QuizMultiple Choice

Understanding Expressions — Quiz

Question 8 • Grade 7 Mathematics

A taxi charges 2 point 5 0 dollars for the first mile and 0 point 4 0 dollars for each mile after that. The given expression shows how to find the total cost, in dollars, of a 20 -mile taxi ride. 2 point 5 0 plus 0 point 4 0 times open paren 20 minus 1 close paren What is the cost of the ride?

Answer
A
55 point 1 0 dollars
B
58 point 0 0 dollars
C
9 point 5 0 dollars
D
10 point 1 0 dollars

Explanation

The first mile costs $2.50, leaving 20 − 1 = 19 miles charged at $0.40 each. Those additional miles cost 19 × $0.40 = $7.60, so the total is $2.50 + $7.60 = $10.10. The correct choice is D, $10.10.

AI-written and checked against the verified answer.

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