Answer:
We have to use the formule to calculate the vertex which is: V(-b/2a;4ac-b^2/4a)
A) y=x+7 where a=1 b=0 and c=7
By replacing we have: V(0;28/4) V(0;7)
B) y=-x where a=-1 b and c=0 so V(0,0)
The answer is 20 because if you divide 15:20 by 5, you get 3:4. hope this helps!
Step-by-step explanation:
15.5 feet to meter =4.7244
