Provide an appropriate response.Multiply two fractions by 
the numerators and 
the denominators.
A. multiplying; canceling
B. adding; multiplying
C. multiplying; multiplying
D. multiplying; adding
Answer: C
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Solve.The length L of a rafter on a building's roof is calculated using the formula L = 
. Suppose that H2, the maximum roof height, is 15 ft; H1, the minimum wall height, is 8.5 feet; and W, the width of the building, is 26 feet. Calculate the rafter length, not including allowance for overhang. (Round to the nearest tenth.)
A. 24.9 ft B. 710.2 ft C. 26.8 ft D. 718.3 ft
Solve the application.The resevoir at the top of a water tower has the shape of a sphere with a radius of 10.1 meters. How many cubic meters of water can the reservoir hold? Use 3.14 for ? to approximate the answer to two decimal places if necessary.
A. 320.31 ft3 B. 427.08 ft3 C. 4313.53 ft3 D. 3235.15 ft3
Indicate whether the number is a proper fraction, an improper fraction, or a mixed number.11
A. Improper fraction B. Mixed number C. Proper fraction
Solve.A rectangular box with volume 468 cubic feet is built with a square base and top. The cost is $1.50 per square foot for the top and the bottom and $2.00 per square foot for the sides. Let x represent the length of a side of the base in feet. Express the cost of the box as a function of x and then graph this function. From the graph find the value of x, to the nearest hundredth of a foot, which will minimize the cost of the box.
A. 8.55 feet B. 8.63 feet C. 7.92 feet D. 8.44 feet