Solve using the elimination method. x + 7y = 312x + 7y = 27
A. (4, 4)
B. (31, 27)
C. (-4, 5)
D. (-3, -4)
Answer: C
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Suppose that the present population of a city is 550,000. Use the equation P( t ) = 550,000e 0.034t to estimate future growth. Estimate the population 50 years from now.
A. P = 3,012,651 B. P = 3,010,671 C. P = 3,010,093 D. P = 3,010,805 E. P = 3,010,950
Solve the equation.8x + 7 = 9(x + 8)
A. 79 B. -65 C. -79 D. 65
Determine the slope, if it exists, of the graph of the given linear equation.y = 
A. not defined
B. m = 
C. m = 0
D. m = - 
Suppose a traveler wanted to visit a museum, an art gallery, and the state capitol building. 45-minute tours are offered at each attraction hourly from 10 a.m. through 3 p.m. (6 different hours). Solve the problem, disregarding travel time.In how many ways could the traveler schedule all three tours in one day, with the art gallery being the last tour of the day?
A. 60 B. 10 C. 30 D. 40