Multiply. Simplify, if possible.-49 ? 
A. - 
B. - 21
C. -12
D. -14
Answer: D
Mathematics
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Find an ordered pair that satisfies the given equation and uses the given value of x. y = -2x + 23 let x = 8
A. (8, 5) B. (8, 23) C. (8, -46) D. (8, 7)
Mathematics
The table lists data that are exactly linear. (i) Find the slope-intercept form of the line that passes through these data points. (ii) Predict y when x = -1.5 and 4.6. 
A. y = -8.9x - 40.8; y = -27.45, y = -81.74 B. y = 4.9x + 40.8; y = 33.45, y = 63.34 C. y = 10.9x + 40.8; y = 24.45, y = 90.94 D. y = 8.9x + 40.8; y = 27.45, y = 81.74
Mathematics
Add. Write the answer in lowest terms as a mixed number.
A. 3
B. 6
C. 6
D. 5
Mathematics
Determine if the given ordered triple is a solution of the system.(3, 5, 1)x - y + z = -1x + y + z = 9x + y - z = 7
A. solution B. not a solution
Mathematics