For the function, find the interval(s) for which f'(x) is positive.f(x) = x2 + 7x + 2
A. (3.5, ?)
B. (2, ?)
C. (-3.5, ?)
D. (1, ?)
Answer: C
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A quarterback is standing in the middle of the field 41 yards from his goal line. He passes the ball to a player 8 yards to his left on the 26 yard line. How long was the pass? ?
A. 42 yards B. 15 yards C. 27 yards D. 17 yards E. 67 yards
Solve the problem.Find the magnitude of the torque in foot-pounds at point P for the following lever:
= 3 in. and 
= 20 lb
A. 9.72 ft-lb B. 4.53 ft-lb C. 2.11 ft-lb D. 60 ft-lb
Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. infinitely many solutions; {
2x + y = 2} or {
2x + y = 4}
B. 
C. 
D. no solution; ?
E = 12.6 V, R1 = 22 Kê, R2 = 15 Kê, and RL = 47 Kê. Find VOC and RTH.
a. VOC = 12.6 V, RTH = 15 Kê
b. VOC= 8.85 V, RTH = 8.9 Kê
c. VOC= 8.85 V, RTH = 11.2 Kê
d. VOC= 5.1 V, RTH = 8.9 Kê
e. VOC= 5.1 V, RTH = 15 Kê