Which expression can be used to determine the nth term in the pattern below 20,25,30,35,40

see explanation

Step-by-step explanation:

These are the terms of an arithmetic sequence with n th term

= a + (n - 1)d

where a is the first term and d the common difference

d = 25 - 20 = 30 - 25 = 5 and a = 20, hence

= 20 + 5(n - 1) = 20 + 5n - 5 = 5n + 15 ← n th term formula

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40