Matt earned $800 helping his grandfather at his business. If spent 1/5 of his earnings on a gift for his mom, how much money did he have left over? Plz I need help answering this plz no link

Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)

Solve the following system of equations express your answer as an ordered pair in the format (a,b) with no spaces between the numbers of symbols 5x+2y=22

What is the scale factor of almn to aopq?