Use substitution.
2p + 3(2p) = 680
2p + 6p = 680
8p = 680
p = 85
Plug in.
x = 2p
x = 2(85)
x = 170
p = 85
The answer is 216.
https://photomath.net/s/YLLqQX
I’m not sure abt 21 but 22 is the second one and the 4th one. So 2,4.
20.41
(one pound is .454 kilograms)
All you would do is divide 9.99/15 to get how much one pound costs.
The answer would be around 66 or 67 cents.
9.99/15=.666
