Please help and explain!

8<x<12

Step-by-step explanation:

We know that sum of any two side of triangle is greater then 3th side, so we have:

x+8>4

x+4>8

4+8>x

i.e

x>-4

x>4

12>x

We can conclude that 4<x<12.

From the picture x is the biggest, x must be greater than 8.

So we have 8<x<12

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168