It takes 48 minutes for 7 people to paint 7 walls how many minutes would it take for 20 people to paint 20 walls

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer