Find all numbers for which the rational expression is not defined.
A. y = 8 and y = -8
B. y = 
C. y = 64
D. y = 8
Answer: A
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Find the distance between the two points on the coordinate plane. If necessary, round the answer to the nearest thousandth.
and 
A. 
? 0.667 units
B. 
? 1.009 units
C. 
? 0.991 units
D. 15 units
Use a calculator to find an approximation for the power. Round the answer to seven decimal places if necessary.3-
A. 0.0123457 B. 0.1111111 C. -6 D. -9
Find fx(x, y).f(x, y) = e5xy
A. fx(x, y) = 5e5xy B. fx(x, y) = 5ye5xy C. fx(x, y) = 5ye5x D. fx(x, y) = 5(x + y)e5xy
Solve.Atmospheric pressure P at altitude a is given by P = P0e-0.00005a, where P0 is the pressure at sea level. Assume that P0 = 14.7 lb/in2 (pounds per square inch).Find the pressure at an altitude of 7000 ft. At what altitude is the pressure 14.7 lb/in2?
A. 10.359 lb/in2; 100 ft B. 10.359 lb/in2; 10 ft C. 10.57 lb/in2; 0 ft D. 10.359 lb/in2; 0 ft