Find the equation of the axis of symmetry of the parabola.y = 7x2 + 7x
A. x = 
B. x = - 
C. x = -7
D. x = 7
Answer: B
Mathematics
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Solve the initial value problem.
= - 
cos 
?, r(0) = -6
A. r = -sin 
? - 6
B. r = cos 
? - 7
C. r = sin 
? - 6
D. r = - 
sin 
? - 6
Mathematics
Solve the problem.A stockbroker bought 5 shares of stock for $28.28 each. What was the total amount of the purchase?
A. $141.30 B. $141.51 C. $141.40 D. $141.50
Mathematics
Solve the problem.Which of the following vectors is orthogonal to 20i - 8j?
A. w = 4i + 3j B. w = 15i - 6j C. w = 20i + 4j D. w = -10i - 25j
Mathematics
Simplify the radical. Assume that all variables represent nonnegative real numbers. 
, n ? 0
A. 
B. 
C. 
D. 
Mathematics