The apr of vinny's savings account is 3.5%, but interest is compounded only once a year. what is the apy of vinny's savings account?

Annual Percentage Yield of Vinny's savings account is equal to 3.5% same as the Annual Percentage Rate since the interest rate is compounded only once a year. Compounding interest once a year is equal to interest rate per year. 

X= -5because this is a single step equation so you would just have to divide -16 both sides for x to equal your solution

C+19÷-17=17c+(-1.11764706)=17c=.11764706)c=18.1176471