Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(2, 5)}
B. {(5, 3)}
C. no solution; ?
D. {(5, 2)}
Answer: D
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Solve the problem by setting up and solving a system of two linear equations in two variables. Use either the elimination-by-addition or the substitution method to solve the system.Suppose that a certain motel rents double rooms at $34 per day and single rooms at $26 per day. If a total of 42 rooms was rented one day for $1,252, how many of single rooms were rented?
A. 27 rooms B. 20 rooms C. 22 rooms D. 42 rooms. E. none of these
Find the first term and the common difference for the arithmetic sequence. Round approximations to the nearest hundredth.S8 = - 100, a8 = -16
A. a1 = 103, d = -1 B. a1 = 103, d = -4 C. a1 = -9, d = -4 D. a1 = -9, d = -1
Simplify the difference.(9y - 4) - (2y - 8)
A. 7y + 4 B. 11y + 12 C. 7y + 12 D. 11y + 4
Use the circle graph of one family's allowance for appliances in their new house to complete the exercise. Write ratios as fractions in lowest terms.
A = $341D = $765B = $1264E = $581C = $458F = $196Find the ratio of refrigerator to stove.
A. 
B. 
C. 
D. 