Write a word name for the number in the sentence.Astronomers predicted that it would take 900,070,000,100 earth years for the newly found supernova to make one revolution around the center of its galaxy.
A. Nine hundred million, seventy thousand, one hundred
B. Ninety billion, seven hundred million, one hundred thousand
C. Nine hundred billion, seventy million, one hundred
D. Nine hundred seventy thousand, one hundred
Answer: C
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Rewrite the quadratic equation in the form ax2 + bx + c = 0, then identify a, b, and c. x = -0.8x2 + 13.9
A. a = -0.8, b = 13.9, c = -1 B. a = -0.8, b = -1, c = -13.9 C. a = --0.8, b = -1, c = -13.9 D. a = -0.8, b = -1, c = 13.9
Solve with calculator.The formula 
models the duration of a storm, D, in hours, in terms of the diameter of the storm, x, in miles. Use a calculator to determine the duration of a storm with a diameter of 12 miles. Round to the nearest hundredth.
A. 0.77 hours B. 2.91 hours C. 0.24 hours D. 41.57 hours
Find the value of the expression.Let logb A = 2.087 and logb B = 0.188. Find logb AB.
A. 11.101 B. 2.275 C. 0.392 D. 1.899
Factor the polynomial completely.12x2 - 25x + 12
A. prime polynomial B. (4x - 3)(3x - 4) C. (4x + 3)(3x + 4) D. (12x + 3)(x + 4)