Answer:
(x, y)=(301 43)
( ---- , ---)
( 29 29)
Step-by-step explanation:
Y-y
——-
X-x
21-9=12
5-(-1) =6
So the answer is D
Answer:
y=5x−83y=x+18 (the question is wrong; it has 2 equal signs)
y+5(3)=15
y+15=15 (multiply 5*3; you get 15)
y= 15-15
y= 0
1 book is 17.55
2 books is 16.70
3 books is 15.85
4 books is 15
5 books is 4.15
6 books is 4.30
7 books is (3.55)