The park is a total of 3+3 = 6 miles east of the mall, and 4+5=9 miles north of it. The Pythagorean theorem tells you the straight-line distance in miles is
√(6² +9²) = √117 ≈ 10.8
I think it is 10 because 18×10=180 but it is close hope this helps
They will need 3 cars, but one of the cars will be having 3 passengers instead of 4. :)
mult .13 with 134
add that to 134
then divide by 2 then that should be your answer
Substitute , so that
Then the resulting ODE in is separable, with
On the left, we can split into partial fractions:
Integrating both sides gives
Now solve for :