Answer the question.How can the graph of f(x) = (x - 1)2 - 7 be obtained from the graph of y = x2?
A. Shift it 1 units horizontally to the right and shift it 7 units downward.
B. Shift it 7 units horizontally to the right and shift it 1 units downward.
C. Shift it 1 units horizontally to the left and shift it 7 units upward.
D. Shift it 1 units horizontally to the left and shift it 7 units downward.
Answer: A
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Find dy for the given values of x and ?x.y = 2x + 3; x = 18, ?x = 0.5
A. 0.1 B. 1 C. 0.5 D. 5
Solve.The president of a certain university makes three times as much money as one of the department heads. If the total of their salaries is $230,000, find each worker's salary.
A. president's salary = $115,000; department head's salary = $57,500 B. president's salary = $172,500; department head's salary = $57,500 C. president's salary = $17,250; department head's salary = $5750 D. president's salary = $57,500; department head's salary = $172,500
Solve the problem.The time it takes to complete a certain job varies inversely to the number of people working on that job. If it takes 20 hours for 13 carpenters to frame a house, then how long will it take 25 carpenters to do the same job?
A. 25 hr B. 10.4 hr C. 16.3 hr D. 40 hr
Draw a diagram to represent the number.
A. 
B. 
C. 
D. 