Which of the following algebraic equations models the English sentence, a number decreased by two is equal to four?
A W + 2 = 4
B 2 -w = 4
C W-2 = 4
D w= 2-4

Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9

What is the value of x when x + 7 = 21?

Which of the following is an equation of a line parallel to the equation y=4x+1?