Simplify. Assume that any variables are positive.
A. 
B. 
C. 
D. 
Answer: A
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Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + y2 = 121y = x - 11
A. (11, 0), (0, -11) B. (-11, 0), (11, 0), (0, -11), (0, 11) C. (-11, 0), (0, 11) D. no real solution
Solve the polynomial inequality and graph the solution set on a number line.x2 - 4x + 4 < 0
A. (-?, 2)
B. (2, ?)
C. ?
D. (-?, ?)
Solve.How can $42,000 be invested, part at 4% annual simple interest and the remainder at 10% annual simple interest, so that the interest earned by the two accounts is equal at the end of the year?
A. $20,000 invested at 4%; $22,000 invested at 10% B. $30,000 invested at 4%; $12,000 invested at 10% C. $12,000 invested at 4%; $30,000 invested at 10% D. $22,000 invested at 4%; $20,000 invested at 10%
Factor the trinomial by grouping.15y2 - 19y + 6
A. prime B. (15y + 2)(y + 3) C. (3y - 2)(5y - 3) D. (3y + 2)(5y + 3)