Ahardware store sells rope at a fixed price per foot. a 50-foot piece of rope cost $12. write an equation that relates c, the cost in dollars of a piece of rope, to f, the length in feet of the piece of rope.

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d