Simplify the expression using the order of operations. Write the answer as an improper fraction where appropriate.20 + (22 ? 2) - 6
A. 78
B. 58
C. 38
D. -168
Answer: B
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Solve and check. Begin by using the addition or multiplication principles of equality to isolate the squared term. 4z2 - 16 = 0
A. 2 B. 10 C. ±3 D. ±2
Solve the problem.A card is drawn from a well-shuffled deck of 52 cards. What is the probability of getting a red 6?
A. 
B. 
C. 
D. 
Solve the problem.In a certain location, the highest temperature recorded was 103°F. The lowest temperature recorded was 131 degrees less than the highest. What was the lowest temperature?
A. 28°F B. 0°F C. -138°F D. -28°F
Use the REGRESSION feature on a graphing calculator.The paired data below consists of the temperature on randomly chosen days and the amount of a certain kind of plant grew (in millimeters).
Find the linear function that predicts a plant's growth as a function of the temperature. Round your answer to two decimal places.
A. y = 14..57x + 0.21 B. y = 0.21x + 14.57 C. y = - 0.06 x2 + 7.20x - 191.23 D. y = - 9.19x3 + 0.11x2 - 2.90x + 6.54