Answer:
the number of miles did he drive the truck is 276 miles
Explanation:
The computation of the number of miles did he drive the truck is as follows
Let us assume the mileage be m
Now according to the question
0.8m + 18.99 = 239.79
0.8m = 239.79 - 18.99
0.8m = 220.8
m = 276
Hence, the number of miles did he drive the truck is 276 miles
The above represent the linear equation