How long will it take to earn $252 in interest if $1200 is invested at a 7% annual interest rate?

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

Suppose a gym membership has an initial enrollment fee of $75 and then a fee of $29 a month. which equation models the cost, c, of the gym membership for m months?

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.