Does anyone know the quotient of x and y

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.