you sell large and small pictures at a fair. you sell a total of 16 pictures and made a total of $350. if you sell for $ 25 and small pictures sell for $20 how much of each did you sell?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Consider the function f(x)=-5x+3 what is f(-2)

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?