A convenience store requires that you spend $4 or more if you want to pay
using a debit card. Donuts cost $0.80 each, and a cup of coffee cost $1.20.
If you will be buying a cup of coffee and donuts and you will be using
your debit card to pay, which inequality represents this situation? What is
the least amount of donuts you would need to buy in order to pay with
your debit card?

4 Doughnuts

Step-by-step explanation:

.80+.80+.80+.80+1.20=4.40. You can't buy half a doughnut.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

c) the median for town a 30" is greater than the median for town b 25"

step-by-step explanation:

town a, median = q2 = 30

town b, median - q2 = 25

so the median for town a 30" is greater than the median for town b 25"