Question

Malik decides that he wants a good result on the state math test. He plans to study for at least 45 minutes three nights per week. Which expression represents Malik's study goal for each week?

Answer 1

`135<t_(minutes)\:<315`

Explanation:

Malik's goal is a minimum total of 135 (45 x 3) minutes per week, in three session of 45 minutes.

Notice that it is at least.

So He can do sessions from 3 , 4, 5, 6 up to 7 nights per week

Hence, we can write his goals in minutes per week:

`G_(w)=3*45<t_(minutes)<7*45\\G_(w)=135<t_(minutes)<315`