Brenda L. answered • 11/06/17

Tutor

5
(32)
Calculus, Diffy Q, Pre-Calc, Algebra, Physics

First, we need to figure out how far Jane traveled during the two hours that Jake was not travelling:

39mph * 2hr = 78mi

As such, the equation modelling her travel is y = 39x + 78.

The equation for Jake's travel is y = 52x.

We set the two equations equal to each other, and solve for x:

39x + 78 = 52x

78 = 13x

x = 6

It takes Jake 6 hours to catch Jane.