Represent each of the following situations with a signed number.The temperature recorded at the airport was 49° below zero.
A. -49
B. +49
Answer: A
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Solve the problem.The graphs of y = 
and y = 5 - x2 intersect at one point x = r. Use Newton's method to estimate the value of r to four decimal places.
A. r ? 1.9208 B. r ? 2.9208 C. r ? 2.9028 D. r ? 1.9028
Use algebraic and/or graphical methods to solve the inequality.x3 + 10x2 + 31x ? -30
A. -5 ? x ? -3 or x ? -2 B. x ? -5 or -3 ? x ? -2 C. x ? 2 or 3 ? x ? 5 D. x < -5 or -3 < x < -2
Solve the problem.A machine can fill 5584 cartons of milk in 0.8 hour. How many cartons of milk can it fill per hour?
A. 4467 cartons/hour B. 5585 cartons/hour C. 6980 cartons/hour D. 6204 cartons/hour
Solve the problem.A ball is thrown vertically upward at an initial speed of 
Its height (in feet) after t seconds is given by 
After how many seconds does the ball reach its maximum height?
A. 2.5 seconds B. 1.25 seconds C. 5 seconds D. 1.67 seconds