Solve the problem.It costs $20 per hour plus a flat fee of $29 for a plumber to make a house call. After writing an equation for this situation, what is the total cost to have a plumber come to a house for 7 hours?
A. $223
B. $587
C. $169
D. $140
Answer: C
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Find y '.y = 
A. 
+ 4x
B. 
+ 4x
C. - 
+ 4x
D. - 
- 4x
Solve the problem.Using the following floor plan, find a path that begins and ends in room A and passes through each doorway exactly once.
A. A ? D ? C ? A ? B ? D ?A B. No such route exists. C. A ? D ? C ? A ? B D. A ? B ? A ? C ? D ? A
Perform the indicated operations. If possible, reduce the answer to its lowest terms.
÷ 
- 
A. 
B. - 
C. - 
D. - 
For the indicated voting system, determine the quota, the number of voters, and the weights of the voters.[51 : 20, 20, 20, 10, 10]
A. Quota: 51, number of voters: 5, weights: 20, 20, 20, 10, and 10 B. Quota: 80, number of voters: 51, weights: 20, 20, 20, 10, and 10 C. Quota: 5, number of voters: 51, weights: 20, 20, 20, 10, and 10 D. Quota: 20, number of voters: 51, weights: 20, 20, 20, 10, and 10