Solve the problem.After sunset in Fargo, North Dakota, the temperature fell at an average rate of 7.5° per hour from 5:00 PM to 7:00 PM. Using a signed number, find the change in temperature from 5:00 PM to 7:00 PM.
A. -15°
B. 15°
C. 6.5°
D. -6.5°
Answer: A
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The associative and commutative properties for addition allow for three or more integers to be added in any order. Find the given sum.-29 + 14 + 15
A. 1 B. 29 C. -1 D. 0
The graph of an exponential function is given. Match the graph to one of the following functions.
A. f(x) = 5x B. f(x) = -5-x C. f(x) = 5-x D. f(x) = -5x
Find the standard equation of the parabola with the given focus and directrix.Focus: (2, 0); directrix: y = -8
A. (x - 2)2 = -16(y + 4) B. (y - 2)2 = -16(x + 4) C. (y - 2)2 = 16(x + 4) D. (x - 2)2 = 16(y + 4)
Solve the polynomial inequality. Express your solution on a number line using interval notation.Use the graph of y = (x - 3)2 - 2 to solve (x - 3)2 - 2 > -1.
A. [2, 4]
B. (-? , 2] ? [4, ? )
C. (-? , 2) ? (4, ? )
D. (2, 4)