Mark purchased 3 hotdogs and 2 pretzels for $7.50. Marta purchased 2 hotdogs and 4 pretzels for $7. How much each hotdog cost? How much did each pretzel cost?

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval

answer: 30

step-by-step explanation: its 30 because im a basketball player and stephen curry hits most of his shots so if you put 30 you might make the shot goodluck