Make Sense and Persevere Beth, Manuel, and Petra are collecting sponsors for a walk-a-thon. The equation У» 20х гергеsents the amount of money Beth raises for walking x miles. The table shows the relationship between the nитber of miles Manuel walks and the атоunt of moпey he will raise. Petra will earn $15 for еach mile that she walks. а. In order to сompare the prорortional relationships, what quantities should you use to find the unit rate?

b. Compare the amount of money raised per mile by the three people.

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.