Solve the problem.Among a group of 80 investors, 19 owned shares of Stock A, 29 owned shares of Stock B, 40 owned shares of Stock C, 12 owned shares of both Stock A and Stock B, 9 owned shares of Stock A and Stock C, 13 owned shares of Stock B and Stock C, and 7 owned shares of all three. How many investors did not have shares in any of the three? How many owned shares of either Stock A or Stock C but not Stock B?
A. 26; 30
B. 19; 37
C. 19; 32
D. 19; 30
Answer: C
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Find the greatest common factor of the numbers. ? 144, 114 ?
A. 10 B. ?7 C. ?9 D. 6 E. ?8
Provide an appropriate response.Which is the common denominator for 
and 
?
A. 15 B. 10 C. 5 D. 20
Solve the problem.A contractor is considering a sale that promises a profit of $38,000 with a probability of .7 or a loss (due to bad weather, strikes, and such) of $18,000 with a probability of .3. What is the expected profit?
A. $20,000 B. $26,600 C. $21,200 D. $39,200
Solve the problem. Round rates to the nearest tenth of a percent and dollar amounts to the nearest cent.Bob's Tires manufactures steel-belted radials at a cost of $53.66 each. Bob then sells the tires at a 44.8% markup based on cost. Find (a) the markup, (b) the selling price, and (c) the markup as a percent of selling price.
A. (a) $119.78 (b) $173.44 (c) 69.1% B. (a) $24.04 (b) $77.70 (c) 44.8% C. (a) $24.04 (b) $77.70 (c) 30.9% D. (a) $119.78 (b) $173.44 (c) 223.2%