Rita drove a total of 120 miles at 40 miles per hour. tom drove a total of 100 miles at 50 miles per hour. which explanation correctly describes a way to calculate the total number of hours rita and tom drove? a. step 1 divide: 120 ÷ 40 step 2 divide: 100 ÷ 50 step 3 add the two quotients. b. step 1 divide: 120 ÷ 40 step 2 divide: 100 ÷ 50 step 3 subtract the two quotients. c. step 1 add 120 + 40. step 2 add 100 + 50 step 3 divide the two sums by 2. d. step 1 subtract 120 – 40. step 2 subtract: 100 – 50. step 3 divide the two differences by 2.   99 to can answer in under 15min

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.