B. r = 75m + 1350 I think is the answer. I hope this helped you!
.3
Whenever finding a decimal out of a fraction divide the numerator by the denominator.
Monday/345
345×3=
Tuesday/1,035
1,035×3=
Wendsday/3,105
3,105×3
Thursday=9,315
11 is your answer because 11* 11 is 121
