Apack of cinnamon-scented pencils sells for $8.00. what is the sales tax rate if the total cost of the pencils is $8.64?

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

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

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2