If y varies directly with x, and y =9 when x=3, what is x when y=15

directly varies for that mean if y increases x will increase too and the other way around if y decreases x will decrease too.

an easy way to solve this is to make all values into fraction ik it sounds confusing lemme explain it. so if we say and add the values of the known we can say that if is equal to

now we just solve it for x

hence when y is 15 x will be 5

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i

the k side

step-by-step explanation:

plese mark mde brainliest!