Sam and Krista work at the same store. Over the past 4 days, Sam worked 22 hours. During the same time period, Krista worked 25% more hours than sam, plus an additional 2.5 hours. How many hours did Krista work ?

tip $2.90

total $17.40

part a: 1.08

part b: 27.59

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of