Solve the equation involving fractions.
+ 
= 5
A. - 
, 10
B. 2, 10
C. - 
, -10
D. 
, -10
Answer: A
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Find the vertex, focus, and directrix of the parabola with the given equation.(x + 4)2 = 16(y - 2)
A. vertex: (-4, 2) focus: (-4, -2) directrix: x = 6 B. vertex: (-4, 2) focus: (-4, 6) directrix: y = -2 C. vertex: (4, -2) focus: (4, 2) directrix: y = -6 D. vertex: (2, -4) focus: (2, 0) directrix: y = -8
Write each whole number in standard form.Last year the population of a city increased by two thousand, one hundred eight.
A. 21,008 B. 2018 C. 2180 D. 2108
Find the slope of the line passing through the two points.(-9, -8) and (-5, 4)
A. 12 B. Undefined C. 3 D. 4
Solve.The function A = A0e-0.01155x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 500 pounds of the material are placed in the vault, how much time will need to pass for only 111 pounds to remain?
A. 260 yr B. 140 yr C. 135 yr D. 130 yr