Ihave a pile of 20 coins that includes dimes and quarters. the coins total is $2.75. how many quarters do i have? explain your reasoning.

Which term best describes the association between variables a and b

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?