Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.
(15x - 10)
A. x
B. 3x - 10
C. 3x - 2
D. 75x - 50
Answer: C
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Find the center of mass of a thin plate of constant density covering the given region.The region cut from the first quadrant by the circle x2 + y2 = 64
A. 
= 0, 
= 
B. 
= 
, 
= 
C. 
= 4, 
= 4
D. 
= 
, 
= 
Solve the problem.Linda invests $25,000 for one year. Part is invested at 5%, another part at 6%, and the rest at 8%. The total income from all 3 investments is $1,600. The income from the 5% and 6% investments is the same as the income from the 8% investment. Find the amount invested at each rate.
A. $10,000 at 5%, $10,000 at 6%, $5,000 at 8% B. $8,000 at 5%, $10,000 at 6%, $7,000 at 8% C. $10,000 at 5%, $5,000 at 6%, $10,000 at 8% D. $5,000 at 5%, $10,000 at 6%, $10,000 at 8%
Use the vertical line test to determine whether y is a function of x.
A. No B. Yes
Graph the solution set of the system.2x + y ? 4 x - 1 ? 0
A. 
B. 
C. 
D. 