Use the given matrices to compute the given expression.If A = 
and B = 
, find -2A + 4B.
A. 
B. 
C. 
D. 
Answer: D
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In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.(
, - 
)Find cos t.
A. - 
B. 
C. 
D. - 
Find the magnitude of the indicated vector.If u = -2i + 7j and v = 0i + 13j, find the magnitude of v - u.
A. 2
B. 3
C. 
D. 2
Find the y-intercept of the polynomial function.f(x) = (x - 2)2(x2 - 9)
A. 18 B. -18 C. 36 D. -36
A local store orders lightbulbs from two suppliers, AAA Electronics and ZZZ Electronics. The local store purchases 30% of the bulbs from AAA and 70% of the bulbs from ZZZ. Two percent of the bulbs from AAA are defective while 3% of the bulbs from ZZZ are defective.Find the probability that a bulb was purchased from AAA and is defective.
Fill in the blank(s) with the appropriate word(s).