Simplify the algebraic expression by collecting and combining like terms.-2b + 4b
A. -2b
B. 2b2
C. Cannot be simplified
D. 2b
Answer: D
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Perform the indicated operation. Simplify the answer when possible.
+ 
A. 
B. 
C. 
D. 
A lighthouse on an island is located at the origin of a coordinate system. East points to the positive x-axis, and north points to the the positive y-axis. Find the bearing of a ship located at the given point. Round the angle measure to the nearest degree where necessary.(3, 0)
A. due east B. due west C. due north D. due south
Solve the problem.If a person puts 1 cent in a piggy bank on the first day, 2 cents on the second day, 3 cents on the third day, and so forth, how much money will be in the bank after 30 days?
A. $2.33 B. $4.65 C. $0.30 D. $9.30
Multiply, and then simplify if possible. Assume all variables represent positive real numbers.(
- y)(
+ y)
A. a - y
B. a - y2
C. a - 2y
- y2
D. a + 2y
- y2