Question

If I start with number 7 and count by 4s, the following sequence is obtained: 7, 11, 15, 19, 23, and so forth. A new sequence os formed when I start with a different number and count by a different number. Suppose the 2nd number of the new sequence is 8 and the 5th number is 17. What is the 10th number of the new sequence?

Answer 1

this is just a wordy way of describing an arithmetic progression with
a+d = 8
a+4d = 17
Solve for a and d, and then find
a + 9d

Answer 2

I need this problem sloved what is the answer