15. What is the y-intercept of the equation: 5x + 2y = 20?
A. (4,0)
B. (5,0)
C. (0,2)
D. (0,10)

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)

X= 3y - 6 2x - 4y = 8 solve the system of equations using substitution. a) (-12,-2) b) (15,7) c) (21,9) d) (24,10)

Iknow the square root of 2 is irrational