1. Which of the following systems is (2, -3) a solution? (Choose all that apply)
a. x+y = -1
b. 2x-y=7
c. 10x + 2y = 28
3x + y = 3
5x + y = 14
6x - 3y = 21
d. 9x - 5y = 33
7x + 2y = 8

The radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. a cone is used to fill the cylinder with water. the radius of the cone's base is 5 centimeters, and its height is 10 centimeters.

Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true

Find the area of the regular hexagon if a side is 20 cm.