Solve the pair of linear equations by addition.
If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.
A. 
B. 
C. 
D. The lines are parallel.
E. The lines coincide.
Answer: C
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Solve the problem. The following data shows the number of housing starts in various years in one beachside community. 
Let f(t) be the number of housing starts at t years since 2009. The data can be modeled by the quadratic model 
. Use the model to predict the number of housing starts in the year 2021.
A. 102 B. 97 C. 104 D. 100
The mean height of kindergartners at an elementary school is 44 inches with a standard deviation of 2 inches. If the heights are normally distributed, use this data to solve the problem. 
What percent of the kindergartners have a height between 42 and 46 inches?
A. 95% B. 68% C. 99.7% D. 34%
Factor the polynomial completely.64x3 + 8y3
A. 8(2x - y)(4x2 + y2) B. 8(2x - y)(4x2 + 2xy + y2) C. (2x - 8y)(32x2 + 2y + y2) D. 8(2x + y)(4x2 - 2xy + y2)
Factor the trinomial.9y2 - 18y + 8
A. (3y + 4)(3y + 2) B. (3y - 4)(3y - 2) C. (9y + 4)(y + 2) D. Cannot be factored