!!!!HELP OR IMMA CALL TUPAC!!!! Safiya deposited money into a bank account that earned 6.5% simple interest each year. After 3 1/2 years, she had earned $36.40 in interest on the account. If no other money was deposited into or withdrawn from the account, how much was her initial deposit?
I=PRT
I=interest
P=amount invested
R=rate in decimal
T=time in years
given
I=36.40
P=?
R=6.5%=0.065
T=3 and 1/2 or 3.5
so
36.4=?0.06253.5
36.4=?*0.2275
divide both sides by 0.2275
160=?
the initial deposit was $160