Evaluate the expression.-10 ? (7 - 4) - 42
A. -14
B. 16
C. -46
D. 3
Answer: C
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Solve the problem. src="https://sciemce.com/media/4/ppg__question0423191135__f1q2g5.jpg" style="vertical-align: -4.0px;" />, and from 
When a beam of light is reflected from a smooth surface, the angle formed by the incoming beam with the surface is equal to the angle formed by the reflected beam and the surface. The beam of light in the figure makes an angle of 39° with 
. Complete the path of the light beam as it reflects from 
, from 
, from 
again. At what angle does the beam reflect from 
the second time?
A. 70°
B. 77°
C. 31°
D. 97°
Solve or simplify, whichever is appropriate.54y-2 + 1 + 15y-1
A. (y + 9)(y + 6)
B. 
C. {15, -9}
D. {9, 6}
Add 
and 
a. D26 b. 12DA c. 32AC d. D18 e. 52CA
Write < or > between the pair of numbers to make the statement true.3 ___ 2
A. > B. <