Solve the equation.3(y + 4) = 4(y - 7)
A. {-40}
B. {40}
C. {-16}
D. {16}
Answer: B
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Either the dimensions of two matrices or the matrices themselves are given. Find the dimensions of the product AB and the product BA. If either is not defined, say so.A = 
; B = 
.
A. AB is 2 × 2; BA is 1 × 1. B. AB is not defined; BA is 2 × 2. C. AB is 1 × 1; BA is not defined. D. AB is 1 × 1; BA is 2 × 2.
Solve the problem.Let the supply and demand equations for raspberry-flavored licorice be given by p = 
q and p = 60 - 
q ,where p is the price in dollars and q is the number of batches. Graph these equations on the same axes (graph the supply equation as a dashed line and the demand equation as a solid line). Also, find the equilibrium quantity and the equilibrium price.
A. 
Equilibrium quantity: 24
Equilibrium price: $30.00
B. 
Equilibrium quantity: 30.00
Equilibrium price: $24
C. 
Equilibrium quantity: 37.50
Equilibrium price: $30
D. 
Equilibrium quantity: 30
Equilibrium price: $37.50
Solve the problem.A bag contains 5 red marbles, 3 blue marbles, and 1 green marble. What is the probability of choosing a marble that is red or green when one marble is drawn from the bag?
A. 
B. 6
C. 
D. 
Solve the problem.Suppose that the sample space is S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} and that outcomes are equally likely. Compute the probability of the event E: "a number divisible by 3".
A. 3
B. 
C. 
D. 