Solve the problem.For small jobs, a contractor mixes concrete from bags of pre-mix. How many bags with 6% cement should he mix with 8 bags of 11% cement to produce a mix containing 8% cement?
A. 14 bags
B. 20 bags
C. 12 bags
D. 25 bags
Answer: C
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Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. no solution; ? B. {(3, 4)} C. {(-3, 4)} D. {(3, -4)}
Find the amount of any refund or tax due. The letter following the name indicates marital status. Assume a 52-week year and that married people are filing jointly. Use $3700 for each personal exemption; a standard deduction of $5800 for single people, $11,600 for married people, and $8500 for head of household; and the tax rate schedule. 
A. $5958.23 due B. $1130.17 due C. $5958.23 refund D. $1130.17 refund
Find the nth term of the geometric sequence.a = -2; r = -4
A. an = -2 ? -4n B. an = -2 ? 4n-1 C. an = -4 ? -2n-1 D. an = -2 ? -4n-1
Indicate if the angle 100° is acute or obtuse. __________ ? Give the complement angle. __________° ? Give the supplement angle. __________°
What will be an ideal response?