The price of a pack of steaks increased from $15 to $21. By what percentage did the price of the pack of steaks increase?

Step-by-step explanation:

21 - 15 = 6$

you have to find how many percent is 6$ in 15$

6 ÷ 15 = 0.4

15 × 0.4 (40/100)

= 6

40 percent

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.