What is the solution to this system of equations? 3x + y = 17 x + 2y = 49

For what value of (y) is 3^3/3^y =1/9

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.

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m