Simplify the algebraic expression.19 decreased by 3 times the sum of 3 and a number
A. 19 - [3(3 + x)]; 3x - 10
B. 19 - [-3(3 + x)]; 28 - 3x
C. 19 - [-3(3 + x)]; 28 + 3x
D. 19 - [3(3 + x)]; 10 - 3x
Answer: D
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A. yes; 4 only B. yes; 3 only C. yes; 5 only D. yes; 3, 5
The circle graph below shows the number of pizzas consumed by college students in a typical month. Use the graph to answer the question. 
If State University has approximately 45,000 students, about how many would you expect to consume 5-6 pizzas in a typical month?
A. 15,300 students B. 810 students C. 1530 students D. 8100 students
Solve the problem.The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters). The following regression equation is obtained: 
where x is temperature and y is growth in millimeters. Predict the growth of a plant if the temperature is 75. Round your answer to two decimal places.
A. 31.03 B. 30.43 C. 28.85 D. 31.63
Factor the polynomial by grouping.42 + 20x2 - 58x
A. (5x + 7)(-4x + 6) B. (5x - 7)(4x - 6) C. (5x - 7)(4x + 6) D. prime