Find the domain of the function.f(x) = -6x + 7
A. {x|x > 0}
B. all real numbers
C. {x|x ? -7}
D. {x|x ? 0}
Answer: B
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Use a proportion to solve the problem.Martin can paint 1840 ft2 with 4 gal of paint. How many 1-gal cans does he need in order to paint a 
wall?
A. 39 cans B. 37 cans C. 10 cans D. 148 cans
The following graph shows the populations of the metropolitan areas of City X and City Y over six years. 
At the time when the populations of the two metropolitan areas were equal, what was the approximate population of each area?
A. about 1.03 million B. about 0.87 million C. about 0.92 million D. about 0.95 million
Express the following number in scientific notation: 0.0006173
a. 6.173 ð 104 b. 6.173 ð 10-4 c. 61.73 ð 104 d. 61.73 ð 10-4
Can the following be the lengths of the sides of a right triangle?4, 11, 12
A. Yes B. No