Use an integer to represent the value in the statement.22-pound gain
A. -22
B. 22
Answer: B
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Write the system
?
?
as a matrix equation AX = B, where A is the coefficient matrix of the system, X is a column matrix of variables, and B is the column matrix of constants. Multiply each side of the equation on the left by the matrix inverse of A to obtain an equivalent system of equations and solve it.
?
A. 
B. ?
C. ?
D. ?
E. ?
First estimate the answer. Then add or subtract to find the exact answer. Write answer as a mixed number.
A. Estimate: 6; Exact: 
B. Estimate: 7; Exact: 
C. Estimate: 7; Exact: 
D. Estimate: 6; Exact: 
Find an equation of the line that contains the given point and is parallel to the given line. If possible, write your equation in slope-intercept form.(2, -9), 4x + 5y = -22
A. y = 
x - 
B. y = - 
x - 
C. y = - 
x - 
D. y = - 
x - 
Express as a single logarithm and, if possible, simplify. log(t3 + 64) - log(t + 4)
A. log(t2 - 4t + 16)
B. log(t2 + 4t + 16)
C. log(t3 - t + 64)
D. 