Add or subtract. Write the answer in lowest terms.
- 
A. 6a
B. 0
C. 81b
D. 9b
Answer: D
Mathematics
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Divide and simplify.
÷ 
A. 
B. 
C. 4 - b
D. 
Mathematics
Write the equation of a line through the given points in slope-intercept form.(2, -4), (0, 7)
A. y = x + 7
B. y = 
x + 7
C. y = - 
x + 7
D. y = -x + 7
Mathematics
Perform the indicated operation. Simplify if possible.
+ 
A. - 
B. 
C. 
D. 
Mathematics
Solve the equation. Use a calculator where appropriate. If the answer is irrational, round to the nearest hundredth.log2 (20 - 4x) = 3
A. 
B. - 
C. -3
D. 3
Mathematics