A 1:24 model of a car is 7.25 in. long. how long is the car?

no. the answer is 174 cuz you could just get 24 and multiply it by 7 and one-fourth

1:24 means  that the "real" car is 24 times as long as the model

So

24 x 7.5 =

24 x ( 7 + 1/2) =

168 + 12 =

180 in =

15 ft

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Edit ....24 (7 + 1/4) = 168 + 6  = 174 in = 14 ft 6 in = 14.5 ft

Thanks to Anon, again, for spotting my error...

Ah....thank you for that correction, Anonymous...that's what I get for being in a hurry...!!!