Answer true or false.A system of two linear equations in two variables can have exactly one solution.
A. True
B. False
Answer: A
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Find the mode (if any) of the list of data. 14, 14, 18, 18, 14, 17, 18, 14
A. 14 B. 15 C. 16 D. 18 E. 13
Solve the problem.A vertical right circular cylindrical tank measures 
high and
diameter. It is full of oil weighing 
. How much work does it take to pump the oil to the level of the top of the tank? Give your answer to the nearest ft ? lb.
A. 1,642,173 ft ? lb B. 27,370 ft ? lb C. 3,284,347 ft ? lb D. 6,568,693 ft ? lb
The number N, in millions, of Americans with Internet access t years after calendar year 1990 is modeled by the function
.
?
For what calendar year will the number of Americans with Internet access reach 133.70 million? Round your answer to the nearest whole number.
?
A. 
B. 
C. 
D. 
Provide an appropriate response.It can be shown that an ellipse with foci (c, 0) and (-c, 0), where the sum of the distances from any point 
of the ellipse to the two foci is 2a, has the equation 
+ 
= 1. Use this result to find an equation of an ellipse with foci (3, 0) and (-3, 0), where the sum of the distances from any point of the ellipse to the two foci is 12.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. x2 + y2 = 144