Raphael is twice as old as his sister. the sum of their ages is less than 30. what is the greatest age raphael sister can be? a. 20 years old b. 15 years old c. 9 years old d. 10 years old

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?