Speed, acceleration time and distance

[ybm]

[SOLVED] Speed, acceleration time and distance

Homework Statement

A car is traveling at 4.2m/s and accelerates at 1.1ms (squared).

In the time of 7.4 seconds how far has the car travelled?

Homework Equations

Not sure.

The Attempt at a Solution

I can't work it out so I'd really appreciate a little help, I know I sound dumb but i need it!

 

[jegues]

D = Vot + 1/2at^2

 

[ybm]

Thank you so much :)