Nsomeone answer this question for me : how can i write repeated multiplication using powers ?

What is the length of the unknown leg in the right triangle ?

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68