Solve the problem.The paired data below consist of the costs of advertising (in thousands of dollars) and the number of products sold (in thousands). By using linear regression, the following function is obtained: 
where x is the cost of advertising (in thousands of dollars) and y is number of products sold (in thousands). Use this function to predict the number of products sold if the cost of advertising is $15,000. Round to the nearest hundredth.
A. 104.35
B. 94.65
C. 41,905.8
D. 97.65
Answer: D
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Solve the problem.A parallelogram has a base of length 3x + 1 and a height of x + 1 and has an area of 96 square units. Find the base and height of the parallelogram. (A = bh)
A. height = 4 units; base = 24 units B. height = 6 units; base = 16 units C. height = 2 units; base = 48 units D. height = 8 units; base = 12 units
Find the first 4 terms of the recursively defined sequence.a1 = 5, a2 = 3, an + 1 = an - an - 1
A. 5, 3, 8, 11 B. 5, 3, 2, -3 C. 5, 3, -2, -5 D. 5, 3, 1, -1
Solve. If necessary, round percents to the nearest tenth and all other answers to the nearest whole.30% of the doctors in a hospital are male. If there are 40 doctors altogether, how many doctors are male?
A. 28 doctors B. 133 doctors C. 12 doctors D. 75 doctors
Graph using the slope and the y-intercept.y = 
x + 1
A. 
B. 
C. 
D. 