Find the area of the SAS triangle ABC. If necessary, round the answer to two decimal places.A = 23°, b = 9 ft, 
ft
A. 3.52 sq ft
B. 3.50 sq ft
C. 3.53 sq ft
D. 3.51 sq ft
Answer: A
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Evaluate the integral.
dx
A. 1
B. 
C. 
D. 
Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(s, t), y = h(s, t), z = k(s)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
Solve the problem.Assume that the sales of a computer retail store are approximated by a linear function. Sales were 
in 1984 and 
in 1989. Let x = 0 represent 1984. Find the equation giving yearly sales. Estimate sales in 1992.
A. y = 340,000x + 770,000 y = 3,830,000 in 1992 B. y = 510,000x + 770,000 y = 4,850,000 in 1992 C. y = 408,000x + 770,000 y = 4,034,000 in 1992 D. y = 510,000x + 770,000 y = 4,340,000 in 1992
Perform the indicated operation. Write the answer in scientific notation.(5.1 × 104) × (3.9 x 103)
A. 2.0 × 10-8 B. 1.989 × 108 C. 1.989 × 1012 D. 1.989 × 104