15(x + 1) + 10(x) = 30(4) - 6( 2x - 1) <em>multiplied by 30 to clear the denominator</em>
15x + 15 + 10x = 120 -12x + 6 <em>distributed</em>
25x + 15 = 126 - 12x <em>added like terms</em>
37x + 15 = 126 <em>added 12x to both sides</em>
37x = 111 <em>subtracted 15 from both sides</em>
x = 3 <em>divided both sides by 37</em>
Step-by-step explanation: Set the function equal to 0 and solve for x.
Answer: x = 0.83393856
So if he drives 50 miles in 1 hour, then he must drive 100 miles in 2 hours. 0.25 is another way of writing 1/4, and to find 1/4 you divide by 4, so 50 ÷ 4 = 12.5 miles. Then you can add this to 100 and get your answer as 112.5 miles.
If you have a calculator, or if you're allowed a calculator, then a simpler way is to just do 2.25 × 50 = 112.5
Hope this helps!
Your equation would be 2.50x + 5. Then subtract 5 from 20. then take 15 and divide it by 2.50. Your answer would be 6. you could ride 6 miles! Good Luck!