Tom has 26 marbles. Let x= the amount of marbles Luke has. If Tom has twice as much, the amount of marbles he has is represented as 2x. 2x+x=39. 3x=39. X=13, and since Tom has twice that amount, 13 times 2 is 26! Hope this helped! ;)
The given point (t, P) is (0, 1000), and the slope is given as ∆P/∆t = 30. Using the point-slope form of the equation for a line, the equation can be written as