Solve each of the following systems of equations. If the system is inconsistent or dependent, say so.4 x - y = 14-4 x + y = -14
A. Dependent
B. (2, 4)
C. No solution
D. (4, 3)
Answer: A
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Solve and write interval notation for the solution set. Then graph the solution set.-3 < x + 2 ? 4
A. [-5, 2)
B. (-1, 6]
C. (-5, 2]
D. [-1, 6)
Solve the problem.Coffee is best enjoyed at a temperature of 125°F. A restaurant owner wants to discover the temperature T at which he should serve his coffee so that it will have cooled to this ideal temperature in 4 minutes. He discovers that a cup of coffee served at 195°F cools to 180°F in one minute when his restaurant is at 74°F. If he maintains the restaurant temperature at 74°F, at what temperature should he serve the coffee to meet his goal?
A. 195°F B. 181°F C. 161°F D. 156°F
Write in scientific notation.0.000022917
A. 2.2917 × 10-4 B. 2.2917 × 105 C. 2.2917 × 104 D. 2.2917 × 10-5
Establish the identity.
= 
What will be an ideal response?