Factor.(m + 1)(a - 8) + (m + 1)(a + 5)
A. (m + 1)(a + 13)
B. (m + 1)(a - 13)
C. (m + 1)(2a - 3)
D. (m + 1)(a2 - 3)
Answer: C
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Solve the inequality.
> 9
A. x > 9 B. -9 < x < 9 C. x > -9 D. x < -9, x > 9
Solve the problem.The fineness (purity) of gold is regulated by law and is the same in all parts of the world. The purity is stated in terms of karats. 18-kt gold is 18 parts gold and 6 parts alloy. Write this measure of purity as a fraction in lowest terms.
A. 
B. 
C. 
D. 3
A rectangular box is to have a square base and a volume of 20 ft3. The material for the base costs src="https://sciemce.com/media/3/ppg__cognero__2.3_Functions_and_Mathematical_Models__media__cc37530d-eff9-4ad0-bad6-1fad79c0850d.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_9e0e8a678654426ca025c0b98" />. Letting x denote the length of one side of the base, find a function in the variable x giving the cost of constructing the box.
?
, the material for the sides costs 
, and the material for the top costs 
What will be an ideal response?
Use the horizontal line test to determine if the function is one-to-one.
A. Yes B. No