A³+1+2a²+2a, a³-1 and a⁴+a²+1 LCM SOLVE​

Kevin has just finished paying off his loan. he was assessed a service charge of $422. he paid off the principal and the interest by making weekly payments of $36.13 for four years. if the principal was $7,150, how much did kevin pay in finance charges, to the nearest dollar? a. $498 b. $365 c. $422 d. $787

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x