Solve the problem.A water rocket is launched upward with an initial velocity of 48 ft/sec. Its height h, in feet, after t seconds is given by 
Determine the height of the rocket 2 sec after it has been launched.
A. 30 ft
B. 64 ft
C. 45 ft
D. 32 ft
Answer: D
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Write a description of the shaded region using the symbols A, B, C, ?, ?, -, and ' as needed.
A. B - A' B. A - B C. B ? A' D. A ? B'
Solve the problem.When a person bends at the waist with a straight back, the force, F, exerted by the person's lower back muscles can be estimated with the formula 
where w is the person's weight, and ? is the angle made by the person's torso relative to the horizontal. Use the sum identity for sine to simplify F.
A. F = 2.89w sin ? B. F = 2.89w (sin ? + cos ?) C. F = -2.89w cos ? D. F = 2.89w cos ?
Solve the problem. Use 3.14 for ? and round to the nearest tenth.A wicker basket has a circular rim with a diameter of 11 inches. How many inches of ribbon are needed to go once around the rim?
A. 34.5 in B. 121 in C. 69.1 in D. 32.5 in
Write the fraction as an equivalent fraction with the indicated denominator.
= 
A. 
B. 
C. 
D. 