Combine like terms.5a + 2b + 3a + 7b
A. 17ab
B. 8a + 2b + 7b
C. 9a + 8b
D. 8a + 9b
Answer: D
Mathematics
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Solve the equation for the indicated variable.ax + b = 0 for x
A. - 
B. -ab
C. 
D. -b - a
Mathematics
Perform the conversion. Round to the nearest tenth when necessary.20 L to gal
A. 5.3 gal B. 9.0 gal C. 21.2 gal D. 4.7 gal
Mathematics
List the elements in the sample space of the experiment.A lottery uses balls numbered 1 through 33. List the sample space of the event picking one even-numbered ball.
A. {2} B. {2, 4, 6, . . ., 32} C. {1, 2, 3, . . ., 33} D. {32}
Mathematics
Provide an appropriate response.Find the 8th term of the geometric sequence whose first term is 5 and whose common ratio is 2.
A. 1280 B. 644 C. 19 D. 640
Mathematics