Add or subtract as indicated.
+ 
A. 
B. 
C. 
D. 
Answer: A
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Subtract.-19 - (-19)
A. 19 B. 0 C. -19 D. 38
Solve the problem. Round your answer, if appropriate.A man 6 ft tall walks at a rate of 4 ft/sec away from a lamppost that is 18 ft high. At what rate is the length of his shadow changing when he is 75 ft away from the lamppost? (Do not round your answer)
A. 
ft/sec
B. 1 ft/sec
C. 2 ft/sec
D. 50 ft/sec
Find the product.(w - 14)2
A. 196w2 - 28w + 196 B. w2 + 196 C. w + 196 D. w2 - 28w + 196
Solve the problem using your calculator.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Use linear regression to find a linear function that predicts a student's score as a function of the number of hours he or she studied.
A. y = -67.3 + 1.07x B. y = 33.7 - 2.14x C. y = 33.7 +2.14x D. y = 67.3 + 1.07x