Simplify the expression by combining like terms.2b + 2a + 3c - 5b - 5a
A. -3a - 3b
B. -3a - 3b + 3c
C. -3a - 3b + 3c
D. 7a - 3b + 3c
Answer: C
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Factor the polynomial by substitution.6y4 + 5y2 - 6
A. (3y2 - 2)(2y2 + 3) B. (2y - 3)(3y + 2) C. (6y2 - 2)(y2 + 3) D. (3y2 + 1)(2y2 - 6)
Solve.A multiple birth is any birth with 2 or more children born. The birth rate is the number of births per 1000 women. In one country, the birth rate B of multiple births as a function of age a is given by the function 
for 
What is the multiple birth rate of women who are 30 years of age according to the model?
A. 39.06 B. 67.14 C. 53.1 D. 28.25
A music store sold $4,326 of pop CDs. If that amount is 21% of their total sales, what were their total sales?
a. $21,200 b. $20,600 c. $24,100 d. $26,300 e. $28,500
State the dimensions of the matrix.
A. 9 B. -5 C. 3 × 3 D. -5 × -5