Ive been doing this for hours please help (answer in mixed number fraction)

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube