Compute the gradient of the function at the given point.
A. ?f = - 
i + 
j
B. ?f = - 
i + 
j
C. ?f = - 
i - 
j
D. ?f = - 
i - 
j
Answer: A
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Provide an appropriate response.A golf ball leaves the ground at a 31° angle at a speed of 88 ft/sec. Will it clear the top of a 30 ft tree that is in the way, 139 ft down the fairway? Explain.
What will be an ideal response?
Solve the problem.The diagram below shows a rope connecting the top of a pole to the ground. The rope is 21 yd long and touches the ground 17 yd from the pole. How tall is the pole? Round your answer to the nearest thousandth if necessary. 
17 yd
A. 12.329 yd B. 6.165 yd C. 19 yd D. 76 yd
Solve the system of equations by elimination, if a solution exists.
A. No solution B. x = 0, y = 9 C. x = 0, y = 8 D. x = -1, y = 9
Express the interval in set builder notation and graph the interval on a number line.(-?, 5.5]
A. {
x ? 5.5}
B. {
x ? 5.5}
C. {
x < 5.5}
D. {
x > 5.5}