Solve the problem.The time it takes to complete a certain job varies inversely to the number of people working on that job. If it takes 20 hours for 13 carpenters to frame a house, then how long will it take 25 carpenters to do the same job?
A. 25 hr
B. 10.4 hr
C. 16.3 hr
D. 40 hr
Answer: B
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The height H, in feet, of the winning pole value in the early years of the Olympic games can be modeled by
?
?
where t is years since 1900. Use functional notation to express what the height of the winning pole vault would have been in 1928.00. Then calculate that value.
?
A. Functional notation: 
. Value is 303.40 feet.
B. Functional notation: 
. Value is 20880.40 feet.
C. Functional notation: 
. Value is 15.31 feet.
D. Functional notation: 
. Value is 319.31 feet.
Use formulas for perimeter and area to solve the problem.A window consists of a rectangle and a semicircle (half a circle). The dimensions of the rectangle are 8 ft by 3 ft. Find the area of the window. If necessary, use 3.14 for ? and round the result to the nearest tenth.
3 ft
A. 14.5 ft2 B. 38.1 ft2 C. 52.3 ft2 D. 26.4 ft2
Determine whether the equation represents direct, inverse, joint, or combined variation.y = 4x2
A. Joint B. Direct C. Inverse D. Combined
Find the domain.f(x) = 
A. {x|x ? 13} or [13, ?) B. {x|x ? 13} or (-?, 13] C. All real numbers or (-?, ?) D. {x|x ? -13} or (-?, -13]