A 20-lb bag of mulch cost 3.80, and a 30-lb bag of the same type of 4.80. Greg found the unit price, which is the constant of proportionality between cost and weight, for each bag of mulch. What is the difference in the unit prices

Ineed with number 17 i don’t get it at alll

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Which statements regarding efg are true? check all that apply.