Below is a list of equations and expressions. (the picture) Which are examples of expressions?

A) 1 and 2
B) 3 and 4
C) 2 and 3
D) 3 only

Which is the most efficient first step to solve x in the equation 3.7x - 18 = -4.3x -34 a. add 3.7x to both sides of the equation. b. add 4.3x to both sides of the equation. c. subtract 18 from both sides of the equation. d. subtract 34 from both sides of the equation.

Factor the polynomial. b^2 + 4b + 4

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air