22a) Matts' weekly fee is $7.50. We know this is by looking at the Y-axis. If he doesn't sell any books at the beginning of the week, his earnings are at -$7.50. We can assume that he pays that much for internet fee.
22b) Matt makes $1.50 for each book he sells. We know this because if you look at (5,0) and then the next one (6, 1.5), we see that his Y-value has increased by $1.50, which is equal to one book because 6 - 5 = 1 book.
22c) y = 1.5x - 7.5
22d) I'm going to assume that question means $30 in profit. Let's plug in the 30 in the equation. 30 = 1.5x - 7.5. Simplify.
Matt has to sell 25 books to make $30
A sneaker company can make 50 pairs of sneakers for every 6 yards of material.
Then in each case you can consider proportion.
1. 50 pairs -- 6 yards,
80 pairs -- x yards.
Mathematically,
2. 50 pairs -- 6 yards,
100 pairs -- x yards.
Mathematically,
3. 50 pairs -- 6 yards,
120 pairs -- x yards.
Mathematically,
4. 50 pairs -- 6 yards,
140 pairs -- x yards.
Mathematically,
Thus, the table is
The domain of the relation is the set 
and the range of the relation is 
See attached diagram for the graph of the relation.
Answer:
X = 4
I hope this helps
if you could, feel free to mark me Brainliest it would be much appreciated :D
