Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of feasible points. 
z = -x - 7y. Find maximum.
A. maximum: -24
B. maximum: -37
C. maximum: -18
D. maximum: -30
Answer: C
Mathematics
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Find the probability.The table lists the eight possible blood types. Also given is the percent of the U.S. population having that type.
Let E be the event that a randomly selected person in the U. S. has type B blood. Let F be the event that a randomly selected person in the U. S. has RH-positive blood.Find P(F|E).
A. 0.818 B. 0.340 C. 0.720 D. 0.107
Mathematics
Solve the equation.
+ 
= 
A. ?
B. {-3}
C. 
D. {-11}
Mathematics
Suppose 500 coins are tossed. Using the normal curve approximation to the binomial distribution, find the probability of the indicated results.Exactly 275 heads
A. .320 B. .004 C. .030 D. .003
Mathematics
Perform the indicated operations.-12 - (-15 - 17) - 20
A. 40 B. 0 C. 64 D. -30
Mathematics