Simplify the expression by combining like terms.- 
(z - 12) - 
z
A. 
z + 12
B. 
z + 8
C. - 
z + 8
D. 
z - 8
Answer: C
Mathematics
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A school board has determined that there should be 3 teachers for every 50 students. How many teachers are needed for an enrollment of 2,750 students?
A. 190 teachers B. 176 teachers C. 165 teachers D. 181 teachers E. 222 teachers
Mathematics
Perform the operation or operations when possible.
+ 
A. 
B. 
C. 
D. 
Mathematics
Solve.Meredith got a monthly cable bill for a base rate of $18.10 , an additional $5.50 for a package of movie channels, a charge of $2.36 for taxes, and a credit of $12.50 to make up for a billing error the previous month. How much was the cable bill?
A. $13.46 B. $11.46 C. $38.46 D. $41.46
Mathematics
Solve the system by the substitution or the addition method.
A. (5, -6) B. (6, 5) C. (15, -7) D. (12, 3)
Mathematics