Roberto made a 74 on last weeks math quiz. this week he made an 85 on the quiz. which best describes the percent of increase in his score

The percentage of increase in Roberto score is 14.87%, if Roberto made a 74 on last weeks math quiz. this week he made an 85 on the quiz.

Step-by-step explanation:

The given is,

               Roberto score on math quiz at last week is 74

               This week he made an 85 on the quiz

Step:1

            Formula to calculate the percentage of increase the score,

                  × 100...........(1)

            From the given,

                  Final score = 85

                  Starting score = 74

           Equation (1) becomes,

                  ×  100

                                                       = ×  100

                                                       = 0.1486486  ×  100

                                                       = 14.86486 %

                                                      ≅ 14.87 %

              Percentage of increase = 14.87 %

Result:

        The percentage of increase in Roberto score is 14.87%, if Roberto made a 74 on last weeks math quiz. this week he made an 85 on the quiz.

b) the dogs need to shift their focus to human scent.