Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = (x + y)2; -1 ? x ? 1, -1 ? y ? 1
A. 
B. 
C. 
D. 
Answer: B
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Answer as requested.Which of the following is likely a coincidence?
A. More crime in neighborhoods with fewer streetlights B. Higher annual rainfall in states with fewer homicides C. Higher real estate prices in cities with more employment opportunities D. Higher incidence of skin cancer in regions with more sunshine
Fill in the blank with one of the words or phrases listed below. 
An algebraic expression is 
when all like terms have been 
.
A. simplified; constant B. simplified; combined C. constant; simplified D. combined; simplified
Solve the problem.The sales of a mature product (one which has passed its peak) will decline by the function S(t)= S0e-at, where t is time in years. Find the sales after 16 years if 
and 
A. 98,675 products B. 2,062,820 products C. 1952 products D. 3903 products
Estimate the value as a whole number or as a mixed numeral where the fractional part is 
. 315 ÷ 5
A. 63
B. 61
C. 62
D. 64