00:01
So maggie, you have a rule that says p sub zero is equal to 40, and then p sub n is equal to p sub n minus 1 plus 15.
00:13
And we have the, you want to calculate p1, well p1 will equal the 40 plus the 15, which is 55.
00:23
P sub 2 is going to equal the 55 plus 15, and that's going to end up equaling the, whoops, the plus 15, my mistake.
00:38
And so that takes us up to 70.
00:41
So there's our first term of our sequence, there's our second term of our sequence, there's our third term of our sequence, but you're starting with p sub zero.
00:48
So you want to write an explicit formula for p sub n where n is going to stand for, you plug n into the function.
00:58
So, so i'm going to do this just a slight bit, and then you want to predict in 10 years or find when n is 5, excuse me, when n is 10.
01:08
So for us, we're going to start with, to determine n, when n was zero we wanted it to equal this.
01:18
But when i have n with, if n is zero, n is 1, n is 2, we know that you go up by 15...