Solve the system graphically.
A. (4, 1), 
B. 
C. 
, (-1, -29)
D. (4, 1)
Answer: A
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Subtract the real numbers. Write any improper fraction as a whole or mixed number where appropriate.2
- 2
A. 
B. 
C. 3
D. 2
Use identities to find the exact value of the trigonometric function.Find tan ? if cos ? = 
and 
< ? < 2?.
A. 4
B. -
C. - 
D. -
A power station is on one side of a river that is 0.5 mile wide, and a factory is 6 miles downstream on the other side of the river. It costs $14 per foot to run overland power lines and $20 per foot to run underwater power lines. Estimate the value of x that minimizes the cost. The value of 
is the length of the overland piece of power line.
?
A. 2.56 B. 5.51 C. 3 D. 5.49 E. 0.87
State the degree of the polynomial and whether it is a monomial, a binomial, or a trinomial.18x5 - 2x4 + 2
A. trinomial, degree 9 B. binomial, degree 5 C. trinomial, degree 10 D. trinomial, degree 5