If you are at mile marker 100 when you start your trip and mike marker 300 four hours later, where were you after 3 hours (assuming a constant speed)?

After 3 hours, you will be on 450 mile marker.

Step-by-step explanation:

step 1: At start, the number in the mile marker is 100

step 2: After 4 hours, the number in the mile marker is 300

step 3: The difference of 300-100= 200. In 4 hours you crossed 200 mile markers.

step 4: Therefore, for 1 hour you can cross= 200/4= 50 mile markers.

For 3 hours, the number of mile markers crossed= 3*50= 150 mile markers.

step 5: After 3 hours, the number in the mile marker will be= 300+150= 450

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