How do i write: N+5 then divide by 4= 17 as an equation

Franco wants to double the volume of the cone. what should he do?

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.

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top