28! hope this helps, you just plug in 4 for x, and then multiply by two.
Answer:
The speed of the biker is 15
Step-by-step explanation:
First, you call the speed of the walker x, and the speed of the biker 2.5x.
Then you know that speed times time equals distance, so you set up and equation. You do x times 2, which is 2x, and then 2.5x times 2, which is 5x. Then, since the distance between them is 18 miles, the equation would be 5x-2x=18. You would get 3x=18, and x is 6. So 6 is the speed of the walker, and 6 times 2.5 = 15, so the speed of the biker is 15.
Answer:
Exact form: - 1/8
Decimal form: -0.125
Answer:
the answer is 5x + 2. I hoped that worked
this is non linear because the rate of change is not constant.
3rd answer