Find the average value of the function f over the given region.f(x, y) = 
over the square 1 ? x ? 9, 1 ? y ? 9.
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem using the tables below.
Find the total annual insurance premium.Territory: 1Credit rating: OCCModel class: 1Vehicle age: NewLiability coverage: 50/100/50Comprehensive deductible: $250 Collision deductible: $500
A. $2035.00 B. $2083.00 C. $1868.00 D. $1483.00
Factor completely. If a polynomial cannot be factored, say it is prime.xy + 10x - 2y - 20
A. (x + 10)(y - 2) B. (x - 10)(y + 2) C. (y - 10)(x + 2) D. (y + 10)(x - 2)
Solve.The speed of a stream is 4 mph. If a boat travels 
downstream in the same time that it takes to travel 
upstream, what is the speed of the boat in still water?
A. 12 mph B. 15 mph C. 14 mph D. 8 mph
Use the substitution-of-variable technique to solve the system analytically.
+ 
= 
- 
= - 
A. {(3, -2)}
B. 
C. {(2, -3)}
D. {(-3, 2)}