Determine whether the equation defines y as a function of x.y = x2 + 3
A. Yes
B. No
Answer: A
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Graph the system of linear inequalities in two variables.
A. 
B. 
C. 
D. 
Rewrite the expression without absolute value bars.|5 + (-10)|
A. 15 B. -15 C. 5 D. -5
Solve.Helen Weller invested $10,000 in an account that pays 10% interest. How much additional money must be invested in an account that pays 13% interest so that the average rate of return on her investments is 11%?
A. $7000 B. $5000 C. $10,000 D. $6000
Find the maximum value of the objective function and where it occurs, subject to the constraints: ? Objective function: ? z = x + 9y ? Constraints: ? x ? 0 y ? 0 x + 4y ? 20 x + y ? 18 ?2x + 2y ? 21 ?
A. Maximum at (0, 5): 45
B. Maximum at 
: 
C. No maximum
D. Maximum at (0, 0): 0
E. Maximum at 
: 