You would use the equation 1000(1+0.3)^x Plug in 6 months for x 1000(1.3)^6 When you solve for that you get 4826.809 and then round to the nearest tenth I would assume so 4826.8 Hope this helps!
You have to subtract 5x since its positive bring it to the other side then divide with negative one with everything which you get you y = 5- 5x the slope is five over one the y intercept is 5