4+5=9 divided by 3 is 3 times 4 is 12. so it's 12
hope this helps;)
Ok but allow my humble self to use 
instead of 
.
We have,
If you wanna know what the inverse is swap the values of x and y,
And now solve for y,
.
Hope this helps.
Answer:
1st term: 1, 2nd term: 3, 3rd term: 5, 4th term: 7 & 10th term: 19
Step-by-step explanation:
1st term: 2(1) - 1
2 - 1 = 1
2nd term: 2(2) - 1
4 - 1 = 3
3rd term: 2(3) - 1
6 - 1 = 5
4th term: 2(4) - 1
8 - 1 = 7
10th term: 2(10) -1
20 - 1 = 19
What? I’m confused what your asking.
