If y varies directly as x, find the direct variation equation for the situation.y = 0.3 when x = 1.2
A. y = x - 0.9
B. y = 0.25x
C. y = 0.3x
D. y = 4x
Answer: B
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Use the two steps for solving a linear programming problem to solve the problem.Suppose that Janine desires 46 grams of protein and 38 grams of dietary fiber daily. One serving of kidney beans has 8 grams of protein and 6 grams of dietary fiber. One serving of refried pinto beans has 6 grams of protein and 6 grams of dietary fiber. If a serving of kidney beans costs $0.45 and a serving of refried pinto beans costs $0.35, then how many servings of each should Janine eat to minimize cost and still meet her requirements?
A. 
servings of refried pinto beans and no kidney beans
B. 4 servings of refried pinto beans and 
servings of kidney beans
C. 
servings of kidney beans and no refried pinto beans
D. 
servings of refried pinto beans and 4 servings of kidney beans
Find the indicated composite for the pair of functions.Given f(x) = 4x2 + 2x + 3 and g(x) = 2x - 7, find (g ? f)(x).
A. 8x2 + 4x - 1 B. 4x2 + 2x - 4 C. 4x2 + 4x - 1 D. 8x2 + 4x + 13
Use elimination to solve each system of equations, if possible. Identify the system as consistent or inconsistent. If the system is consistent, state whether the equations are dependent or independent. 
+ 
= 4
- 2y = 21
A. (-6, -8); consistent and independent B. (6, 8); consistent and independent C. (-6, 8); consistent and independent D. (6, -8); consistent and independent
Write the binomial expansion of the expression.(2x2 - y)5
A. 32x10 - 80x8y - 80x6y2 - 40x4y3 - 10x2y4 - y5 B. 32x10 - 80x8y + 80x6y2 - 40x4y3 + 10x2y4 - y5 C. 32x10 + 80x8y + 80x6y2 + 40x4y3 + 10x2y4 + y5 D. -32x10 + 80x8y - 80x6y2 + 40x4y3 - 10x2y4 + y5