The length of a football playing field is 100 yards between the opposing goal lines. what is the length of the football field in feet? use the conversion equivalency of 3 feet = 1 yard.

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