Sally is buying paper clips and staples for the office. a box of paper clips costs (x) $2, and a box of staples (y) costs $4. she is using only the petty cash account's balance of $28 to make the purchase. which inequality models this situation?
a) 2x + 4y ≤ 28
b) 4x + 2y ≤ 28
c) 4x + 2y < 28
d) 2x + 4y > 28

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?