Simplify the expression. If any variables exist, assume that they are positive.15
+ 6
A. 
B. 21
C. 21
D. 21
Answer: D
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Which of the following has the greater payout and why? I. A 40% probability of winning $9,000 and a 60% probability of no payout. II. An 75% probability of winning $2,000 and a 25% probability of no payout. ?
A. ?I. has the higher payout. The expected value is $3,600. B. ?II. has the higher payout. The expected value is $1,500. C. ?I. has the higher payout. The expected value is $5,400. D. ?II. has the higher payout. The expected value is $500. E. ?Both have the same payout.
Factor completely. If the polynomial cannot be factored, say it is prime.27x2 - 117x - 90
A. 9(3x - 2)(x + 5) B. 9(3x + 2)(x - 5) C. (27x + 18)(x - 5) D. prime
Solve using the addition principle.x + 7 = 12
A. -5
B. 19
C. 5
D. 
Find the exact value of the given expression.
A. 
B. 
C. 
D. 
E. 