To find the cost of traveling 70 miles using the linear model (line of best fit), you can substitute \( x = 70 \) into the equation \( y = 0.37x + 5 \).
\[ y = 0.37(70) + 5 \]
Now calculate \( 0.37 \times 70 \):
\[ 0.37 \times 70 = 25.9 \]
Now add 5:
\[ y = 25.9 + 5 = 30.9 \]
So, the cost to travel 70 miles would be $30.90.
Thus, it would cost $30.90 to travel 70 miles.