Solve the system by graphing.
A. (4, 6)
B. (3, 15)
C. (6, 4)
D. ?
Answer: A
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Find the indicated cardinal number.Find n(B) given that n(A × B) = 30 and n(A) = 3 .
A. 27 B. 33 C. 10 D. 3
Simplify the given expression. Expansion of any term is not necessary; proper recognition of the form of the expression leads to the proper result.4 sin2 x cos2 x
A. 4 sin2 2x B. sin2 2x C. 2 sin 2x D. 4 cos 2x
Solve the problem.An invoice is received from Westminster Office Machines for $305.30 with terms of 4/11 and dated 
AS OF Mar 1. If a partial payment of $190 is made on Mar 9, find the balance due on the invoice.
A. $107.38 B. $115.30 C. $103.09 D. $197.92
Assume that the probability that an airplane engine will fail during a torture test is 
and that the aircraft in question has 4 engines. Find the probability that exactly 1 engine0 will survive.
?
A. 
B. ?
C. ?
D. ?
E. ?