The answer is 8(8+3)
You can also write it as 8*8+8*3, which can then be simplified to 8(8+3)
It would be 20. All you need to do is multiply by 2.
Answer:
5*35+5=180
Step-by-step explanation:
David is correct, for every 25 miles they use 2 gallons of gas. 100/25=4x2=8 gallons for David and 75/3=3x2=6 gallons for Rebecca