Multiply.(-2x - 5)2
A. -2x2 + 20x + 25
B. 4x2 + 25
C. 4x2 + 20x + 25
D. -2x2 + 25
Answer: C
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Write an equivalent double integral with the order of integration reversed.
A. 
B. 
C. 
D. 
Perform the indicated division or state that the expression is undefined.
A. 9 B. -10 C. 10 D. -9
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 = 2.5 seconds B. maximum height = 50 ft; time to reach ground = 2.5 seconds C. maximum height = 75 ft; time to reach ground = 1.25 seconds D. maximum height = 50 ft; time to reach ground = 1.25 seconds
Translate the stated rule or relationship to a formula.The square of the hypotenuse, c, of a right triangle is equal to the sum of the squares of the legs, a and b.
A. c2 = (a + b)2 B. c2 = a2 + b2 C. c = a2b2 D. c = a + b