Simplify.(
+ 7)2
A. y+ 14
+ 49
B. y+ 49
C. y2+ 14y + 49
D. y2+ 14
+ 49
Answer: A
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Simplify the expression by combining like terms.9b - 5b + 4
A. 14b + 4 B. 8b C. 4b + 4 D. -4b + 4
The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where x0 = 10-3.What is the magnitude of an earthquake whose seismographic reading is 7.6 millimeters at a distance of 100 kilometers from its epicenter? Round the answer to the nearest tenth.
A. 880.8 B. 3.9 C. 2.9 D. 2.6
Graph the function.y = 
sin 2x 
A. 
B. 
C. 
D. 
Find an equation of the line, and write it in (a) slope-intercept form if possible and (b) standard form.Through (-3, -8); horizontal
A. (a) not possible (b) x = 8 B. (a) y = -8 (b) y = -8 C. (a) not possible (b) x = -3 D. (a) y = 3 (b) y = 3