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.