If 4 t-shirts cost $15, how much will 12 t-shirts cost?

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl