Katelyn worked 20 hours last week. This week she worked 80% more hours. How many more hours did she work this week?

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?