Abigail is riding her bike down the street at 15m/s. If it takes her 60 sec to get to the end of the street, then how long is the street?

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?

Assemble the proof by dragging tiles to the statements and reasons column

Can someone me out here number 4 plz