1. solve the following equation for x: 2x + 5y = 8.
a. x = 5 over 2y +4
b. x = -5 over 2y -4
c. x = 5 over 2y -4
d. x = -5 over 2y +4

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

What is (28 + 7 + 6 + 3) x 1/2 show your work

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