11. Think About the Process Auditions for the next school play took place on Wednesday, Thursday, and Friday. Only 12 students can be in the play. Each day, t students tried out. The number of students who tried out but did not get a role is 60.
a. Which diagram and equation represent the problem?
b. Solve the equation to find the number of students who tried out on Thursday.
12. Think About the Process The volume of the prism shown is 896 cm3.
a. Write an equation for the volume V of the prism.
A. V = 7 + 8 + x + 5
B. V = (7)(8)(x + 5)
C. V = (7)(7)(x + 5)
D. V = (7)(8)(x − 5)
b. Solve the equation to find the value of x.
c. The height of the prism is cm.
13. Challenge In 6 months, a shopkeeper spends $10,590 for rent, electricity, and water. Each month, he spends $1,500 for rent and $230 for electricity. How much does he spend for water each month?
a. Write an addition equation to model the problem.
b. Solve the equation.