Question

Rule for Pattern R: Start with 60. Subtract 6 to get the next term.

60, 54, 48, 42, 36
Ques: write an expression you can use to generate the first five terms of Pattern R

Answer 1

This is an arithmetic progression. The general term of an arithmetic progression is given by:


`a_(n)=a_(1)+(n-1)r`

Where "n" indicates the position and "r" is the ratio of progression. Therefore:


`a_(n)=60+(n-1)*(-5) \\ \boxed {a_(n)=60+5*(1-n)}`

If you notice any mistake in my english, please let me know, because i am not native.