Grade 8 Common Core Math Tests Question 13

How much time will an old car take to cover a distance of 39 miles at a speed of 13 miles/hour? Express distance as a function of time.

(A) 3 hr, y =13x
(B) 3 hr, y =3x C
(C) 13 hr, y=39x
(D) 3 hr, x= 13y

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Test ID: 2160