Which inequality is true for x = 3? a) 6x + 18 < 30 b) 8x − 4 < 10 c) 10x + 10 < 37 d) 15x − 10 < 40

Hello!

You can put 3 in for x and see which on is true

Inequality A

6(3) + 18 < 30

Multiply

18 + 18 < 30

Add

36 < 30

This is not true so this is not the answer

Inequality B

8(3) - 4 < 10

Multiply

24 - 4 < 10

Subtract

20 < 10

This is not true so this is not the answer

Inequality C

10(3) + 10 < 37

Multiply

30 + 10 < 37

Add

40 < 37

This is not true so this is not the answer

Inequality D

15(3) - 10 < 40

Multiply

45 - 10 < 40

Subtract

35 < 40

This is true so this is the answer

The answer is D) 15x - 10 < 40

Hope this helps!