Solve using the substitution method.x + y = -9y = -4x - 3
A. (1, -9)
B. (2, -11)
C. (-11, 2)
D. (3, -18)
Answer: B
Mathematics
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Factor by grouping.x3 + 5x2 + 7x + 35
A. (x2 + 7)(x - 5) B. (x2 + 7)(x + 5x) C. (x3 + 7)(x + 5) D. (x2 + 7)(x + 5)
Mathematics
Find the probability of the event.A bag contains 4 red marbles, 8 blue marbles, and 6 green marbles. A marble is randomly selected from the bag. What is the probability that it is blue?
A. 
B. 
C. 
D. 
Mathematics
Find the sum of the infinite geometric series, if possible. If it is not possible, explain why. If necessary, round to three decimal places.1 + 
+ 
+ . . .
A. 0.727
B. 1.6
C. The sum does not exist because 
? 1.
D. 0.2
Mathematics
Multiply and simplify.
? 3b
A. 
b
B. 
C. 
D. 11b
Mathematics