Solve the problem.The temperature recorded on a thermometer was 9° C. Evaluate the expression 
C + 32 for C = 9 to find the corresponding temperature in degrees Fahrenheit.
A. 48.2° F
B. -27° F
C. -15.8° F
D. 37° F
Answer: A
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Provide an appropriate response. A measurement is 12.3 sec. Find the greatest possible error of this measurement:
A. 1 sec B. .05 sec C. 0.005 sec D. 0.5 sec
Simplify the trigonometric expression by following the indicated direction.Rewrite in terms of sine and cosine: cot x ? tan x
Fill in the blank(s) with the appropriate word(s).
Solve the problem.If Marco hired a plumber for 5 hours the total cost would be $170. If he hired the same plumber for 13 hours , the total cost would be $410. Assume a linear relationship between the cost, y, in dollars and the number of hours worked, x. Find an equation in slope-intercept form that models the relationship between the cost and the number of hours worked.
A. y = 30x + 20 B. y = 30x + 20x C. y = 35x + 20 D. y = 30x + 60
Choose the inequality that matches the graph.
A. y ? -x2 - 6x - 2 B. y > -x2 - 6x - 2 C. y ? -x2 - 6x - 2 D. y < -x2 - 6x - 2