Find the missing side round your answer to the nearest tenth

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

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits