Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 
, w = 
A. 18.4°
B. 161.6°
C. 108.4°
D. 71.6°
Answer: A
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Evaluate the integral.
A. - 
(7x2 + 3)-6 + C
B. - 
(7x2 + 3)-4 + C
C. - 
(7x2 + 3)-4 + C
D. - 
(7x2 + 3)-6 + C
Find dy/dt.y = (1 + sin 8t)-6
A. -48(1 + sin 8t)-7 cos 8t B. -48(cos 8t)-7 C. -6(1 + sin 8t)-7 cos 8t D. -6(1 + sin 8t)-7
Solve the problem.Sales of frozen pizza for a club fund-raiser increased from 500 one year to 530 the next year. What was the percent of increase?
A. 94.3% B. 94% C. 6% D. 5.7%
Solve the problem.Let x represent the number of gallons of gas sold at $2.50 per gallon, and let y represent the total cost of the gasoline (in dollars). Write an equation for this situation. Then give the ordered pair with an x-value of 10 associated with this equation.
A. y = 2.50 + x; (10, 12.50) B. x = 2.50y; (10, 4.00) C. y = 2.50x; (10, 25.00) D. x = 2.50 + y; (10, 7.50)