Help me please ir might fail ………..

Allie answered 72% of the questions on her math test correctly. if she answered 18 questions correctly, how many questions were on the test?

Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')