32 + 0.33c = p
where c is every card more than 80 (so if you want 82 card c = 2)
and p is the total price
B is correct because the three ans is intersect, only parallel lines never intersect at any point
Answer:
(0,5) (1/2, -1) (1, 3)
Step-by-step explanation:
We basically plug in all of these points.
(0,0) --> 0=8(0)-5 <-- This is not true, because 0 ≠ -5
(0,5) --> -5=8(0)-5 <-- This is true, because -5 = -5
(1/2, -1) --> -1=8(1/2)-5 <-- This is true because -1 = -1
(8, -5) --> -5=8(8)-5 <-- This is not true because -5 ≠ 59
(1, 3) --> 3=8(1)-5 <-- This is true because 3 = 3
Answer: 15 goats
Step-by-step explanation:
h = hens - they have 2 legs
g = goats - they have 4 legs
The equations would be:
h + g = 19
2h + 4g = 68
To solve this, I personally prefer substitution, we're isolating h since we need to find g:
h + g = 19
h = 19 - g
Now that we have h, we can plug this into the second equation:
2h + 4g = 68
2(19 - g) + 4g = 68
38 - 2g + 4g = 68
2g = 30
g = 15
There are 15 goats.
Adding onto this, 19 - 15 = 4, so there are 4 hens.