No one me with the last question but i got it can someone me with this

You are designing a rectangular pet pen for your new baby puppy. you have 30 feet of fencing you would like the fencing to be 6 1/3 feet longer than the width

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)