Find the area of the triangle. Approximate values to the nearest tenth when appropriate.Legs with lengths 9 ft and 9 ft

A. 81 ft2
B.  ft2
C. 162 ft2
D. 18 ft

Answer: B

Mathematics

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Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 3x3

A.

B.

C.

D.

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Mathematics

Solve the problem.Consider the quadratic model h(t) = -16t2 + 40t + 50 for the height (in feet), h, of an object t seconds after the object has been projected straight up into the air. Find the maximum height attained by the object. How much time does it take to fall back to the ground? Assume that it takes the same time for going up and coming down.

A. maximum height = 75 ft; time to reach ground = 1.25 seconds B. maximum height = 50 ft; time to reach ground = 1.25 seconds C. maximum height = 75 ft; time to reach ground = 2.5 seconds D. maximum height = 50 ft; time to reach ground = 2.5 seconds

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Mathematics

Solve. A lamp shade has the geometric form shown below. The total surface area of a lamp shade with slant height s and top and bottom base radii of r2 and r1, respectively, is given by the expression  Factor this expression. 

A. ?(r12 + r22 + sr1 + sr2)
B. ?(r1 + r2)(r1 + r2 + sr1r2)
C. ?(r1 + r2)(r1 + r2 + s)
D. ?r1(r1 +  + sr1 + sr2)

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Mathematics

Find a formula for the inverse of the function described below.32° Fahrenheit = 0° Celsius. A function that converts temperatures in Celsius to those in Fahrenheit is .

A. f-1(x) = (x - 32)
B. f-1(x) = x + 32
C. f-1(x) = x + 32
D. f-1(x) = (x + 32)

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Mathematics