Solve the problem.A rectangular steel plate expands as it is heated. Find the rate of change of area with respect to temperature T when the width is 
and the length is 
if 
and 
A. 3.6 x 10-5 cm2/°C
B. 1.9 x 10-5 cm2/°C
C. 4 x 10-5 cm2/°C
D. 0.8 x 10-5 cm2/°C
Answer: A
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Find the absolute value of the complex number.z = -2i
A. 4 B. 2i C. -2 D. 2
Of the 585 tickets sold to a movie, 359 were full-price tickets costing $5.00 each. If the gate receipts were $2,416.50, what did a student ticket cost? Round your answer to the nearest cent. ?
A. $3.25 B. $3.75 C. $2.25 D. $4.75 E. $2.75
Use a calculator to graph the rational function in the window indicated. Use the graph to (a) give the x- and y-intercepts, (b) explain why there are no vertical asymptotes, (c) give the equation of the oblique asymptote, and (d) give the domain and range.f(x) = 
; [-8, 8] by [-3.9, 3.9]
A. (a) x-intercepts: (-6, 0), (-3, 0), (6, 0); y-intercept: 
;
(b) The denominator has no real zeros because the discriminant, -132, is negative.;
(c) y = -x + 5;
(d) The domain and range are both (-?, ?).
B. (a) x-intercepts: (-3, 0), (-6, 0), (3, 0); y-intercept: 
;
(b) The denominator has no real zeros because the discriminant, -132, is negative.;
(c) y = x - 5;
(d) The domain and range are both (-?, ?).
C. (a) x-intercepts: (-6, 0), (-3, 0), (6, 0); y-intercept: 
;
(b) The denominator has no real zeros because the discriminant, -111, is negative.;
(c) y = x - 5;
(d) The domain and range are both (-?, ?).
D. (a) x-intercepts: (-3, 0), (-6, 0), (3, 0); y-intercept: 
;
(b) The denominator has no real zeros because the discriminant, -111, is negative.;
(c) y = -x - 5;
(d) The domain and range are both (-?, ?).
Simplify. Assume that all variables represent positive real numbers.
A. 49
B. 12
C. 7
D. 7