A class has 9 girls and 12 boys what is the probability of the teacher randomly calling on a boy?

3/4

4/7

3/7

4/3

Tysm!

There are 1,500 students in the school based on the sample proportion how many students in the school would be expected to do household chores for at least two hours every week

Each roll of tape is 30.5 feet long. a box contains 454 rolls of tape. in total, there are _ yards

An electrician charges $40 per hour for service calls up to eight hours, but increases this rate by 50% for additional hours. The electrician will not work more than twelve hours per service call and also charges a $25 trip charge.

Evaluate f (2) for f (x) = 3^x

Formulate the situation as a system of two linear equations in two variables. Be sure to state clearly the meaning of your x - and y-variables. Solve the system by the elimination method.

A supplier has delivered 9 pallets of material to the hardware store. The delivery needs to be inventoried in 1.5 hours. How many pallets must be inventoried per hour?

Solve x for 3 х - 1 = - 13

12 + x4 - 6 when x = 8

Is it a function? If you said no, which x value repeats, making it not a function? (1, - 2), (2, 1), (3, 6), (4,13), (5, 22)

On Monday, 356 students went on a trip to the zoo. All 7 buses were filled and 6 students had to travel in cars. How many students were in each bus? Make an equation