Determine whether the ordered pair is a solution for the equation.(3, 2); 4x + 5y = 22
A. Yes
B. No
Answer: A
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Answer the question.Which pair of values of x and y makes 6x + y equal 12?
A. x = 2 and y = 0 B. x = 0 and y = 2 C. x = 6 and y = 3 D. x = 3 and y = 6
Solve the problem.Suppose an animal feed to be mixed from soybean meal and oats must contain at least 100 lb of protein, 20 lb of fat, and 9 lb of mineral ash. Each 100-lb sack of soybean meal costs $20 and contains 50 lb of protein, 10 lb of fat, and 8 lb of mineral ash. Each 100-lb sack of oats costs $10 and contains 20 lb of protein, 5 lb of fat, and 1 lb of mineral ash. How many sacks of each should be used to satisfy the minimum requirements at minimum cost? Fractional sacks are allowed.
A. 
sacks of soybeans and 
sacks of oats
B. 2 sacks of soybeans and 0 sacks of oats
C. 
sacks of soybeans and 
sacks of oats
D. 0 sacks of soybeans and 4 sacks of oats
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x - y + z - w = 10 -2x + 3y + 5w = -28x + 2y + 8z + 3w = -10 x - 4y - 6z - 5w = 30
A. {(3w - 2, -8w + 3, 4w + 9, w)} B. {(24, 10, -6, -2)} C. {(-17w - 10, -13w - 16, 5w + 4, w)} D. ?
A piecewise function is given. Use the properties of limits to find the indicated limits, or state that the limit does not exist.f(x) = 
a. 
f(x)
b. 
f(x)
c. 
style="vertical-align: -21.0px;" />f(x) A. a. does not exist b. 15 c. 15 B. a. 15 b. does not exist c. 15 C. a. 15 b. does not exist c. does not exist D. a. does not exist b. 15 c. does not exist