help pleaseee!!!

Solving for the Number of Periods, n the past obre wyout STEP Picture the problem STUP Decide.notion strategy tento non om mo Www Selon STEP 3: @ -Nord STERA Anaya STEPS Check (Solving for n) How many years will the following take? a. $500 to grow to $1,039.50 if it's invested at 5 percent compounded annually b. $35 to grow to $53.87 if it's invested at 9 percent compounded annually c. $100 to grow to $298.60 if it's invested at 20 percent compounded annually d. $53 to grow to $78.76 if it's invested at 2 percent compounded annually