Which of the following relations is a function? A {(-5,5), (0, 3), (0, -5), (5,4)}
B (3, 4), (3,5), (3, 6), (3,7)
C {(-2, 1), (0, 1), (2,5), (4,5)}
D {(3, 2), (5,4), (5, 6), (7, 8)}

`1234567890-=/*-qwertyuiop[]asdfghjkl; '\\zxcvbnm,./+ /

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1