Solve the linear equation.(x - 7) - (x + 3) = 7x
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.Your company uses the quadratic model y = -11x2 + 350x to represent how many units (y) of a new product will be sold (x) weeks after its release. How many units can you expect to sell in week 20?
A. 2600 units B. 7220 units C. 6780 units D. 11,400 units
Use a tree diagram showing all possible results when a die is rolled twice. List the ways of getting the following result.The sum of the numbers showing is either 3 or 4.
A. (2,1),(3,1),(2,2) B. (1,2),(1,3),(2,2) C. (1,2),(2,1),(1,3),(3,1),(2,2) D. (1,2),(2,2)
Set up an integral for the length of the curve.y = 2 cot x, 
? x ? 
A. 
B. 
C. 
D. 
Solve the system by the substitution method.
A. (9, 68), (16, 243) B. (-3, -4), (3, -4) C. (-4, 3), (4, 3) D. (-4, 3), (-3, -4), (3, -4), (4, 3)