Timothy bought 12 of his cars to the babysitters. these toy cars represent 30% of his toy car collection. what is the total number of cars in timothy's collection

If 30% of his collection is 12 cars, then we can use the fraction

30/12=100/x

x=40

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step-by-step explanation:

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problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !