The vector 
gives the number of units of two models of laptops produced by a company. The vector 
gives the prices (in dollars) of the two models of laptops, respectively. Use dot
products to determine the revenue for these two laptops if the price of each is increased by 3.5%.
A. $8,186,667
B. $8,175,000
C. $8,280,000
D. $8,227,500
E. $8,105,000
Answer: C
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For the given figure, find the ratio of the length of the longest side to the length of the shortest side. Write the ratio as a fraction in lowest terms.
A = 0.3 yardB = 2.1 yardsC = 0.3 yardD = 2.1 yards
A. 
B. 
C. 
D. 
Solve the equation. Express radicals in simplest form.-2k2 - 1 = -19
A. ±6 B. -9.5 C. 3 D. ±3
Solve the problem. First use front end rounding. Then find the exact answer.The table shows the approximate price for several items that Tracy would like to purchase as gifts for her friends. How much will she need to spend in order to purchase a jacket, a coffee mug, a tee shirt, and basket of assorted nuts and candy?
A. Estimate: $110; exact: $99 B. Estimate: $110; exact: $113 C. Estimate: $100; exact: $113 D. Estimate: $110; exact: $115
Find the square root.
A. 15 B. 112.5 C. 50,625 D. -15