Robyn and Shruti both run on the cross country team. Robyn runs 2 miles every day. Shruti starts her week with a 3-mile run and runs 1 mile every day, even on the day she runs the 3 miles. If M is the number of miles run during the week, and d id the number of days the girl has run this week, for which girl is the relationship between M and d multiplicative?

A. Shruti, because M = d +3
B. Shruti, because M = 3d
C. Robyn, because M = 2d
D. Robyn, because M = d + 2

Can someone show me how to solve?

3 answers

Robyn: M=2d
Shruti: M=3+d

Since Shruti adds a constant 3 miles to her multiple of d, her relationship is not strictly multiplicative.

its trash

trash math