Solve. If needed, round money amounts to two decimal places and all other amounts to one decimal place.The number of video stores in a region recently decreased from 141 to 92. Find the percent of decrease.
A. 65.2%
B. 187.8%
C. 34.8%
D. 53.3%
Answer: C
Mathematics
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Solve the system using Gaussian elimination. -3x - 9y + 9z = 42 9x + 27y - 27z = -126-12x - 36y + 36z = 168
A. {(x, y, z) 
-3x - 9y + 9z = 42}
B. ?
C. {(x, y, z) 
-12x - 36y + 36z = 42}
D. {(-8, -9, -7)}
Mathematics
You are given 
and a tolerance ?. Find a number ? such that | f(x) – L |
Mathematics
Use the distributive property to rewrite the expression.7(4 + 3)
A. 7 ? 4 + 3 B. 7 ? 4 ? 3 C. 7 + 4 + 3 D. 7 ? 4 + 7 ? 3
Mathematics
Find the area of the rectangle.
A = 
in.B = 11 in.
A. 
in.2
B. 3 in.2
C. 
in.2
D. 
in.2
Mathematics