Find the x-intercepts of the graph of the equation. (The grids are intentionally not included.)y = x2 - x - 42
A. (7, 0), (6, 0)
B. (1, 0), (-42, 0)
C. (42, 0)
D. (-6, 0), (7, 0)
Answer: D
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Change the logarithmic expression to an equivalent expression involving an exponent.log1/5625 = -4
A. (-4)1/5 = 625
B. 
-4 = 625
C. 6251/5 = 4
D. 
4 = 625
Solve the problem.A furniture manufacturer decides to make a new line of desks. The table shows the profit, in thousands of dollars, for various levels of production. 
Find a quadratic function to model the data, and use the model to predict the profit if 450 desks are made. Round to the nearest thousand.
A. $44,000 B. $40,000 C. $42,000 D. $45,000
Solve the problem.At a ticket booth, customers arrive randomly at a rate of x per hour. The average line length is 
where 
To keep the time waiting in line reasonable, it is decided that the average line length should not exceed 6 customers. Solve the inequality 
to determine the rates x per hour at which customers can arrive before a second attendant is needed.
A. 0 ? x ? 18 B. 0 ? x ? 19 C. 0 ? x ? 16 D. 0 ? x ? 17
The following carbohydrate information is given on the side of the respective cereal boxes ( for 1 oz of cereal with 
cup of whole milk ). What is the minimum cost to receive at least 138 g starch and 51 g sucrose by consuming these two cereals if Corn Flakes cost $0.04 per ounce and Honeycombs cost $0.18 per ounce?
Starch and related carbohydratesSucrose and other sugarsKellogg's Corn Flake23 g3 gPost Honeycombs6 g6 g
A. Minimum cost is $1.31 B. Minimum cost is $4.14 C. Minimum cost is $0.69 D. Minimum cost is $0.48 E. Minimum cost is $0.84