Answer:

Step-by-step explanation:
We are given equation of parabola as

we can also write as

now, we can compare

and find a , h , and k
a=1
h=0
k=0
now, we can use focus formula

now, we can plug values


Answer:
15x + 40
Step-by-step explanation:
5(3x + 8)
Use the distributive property and multiply 5 by 3x and 8
5(3x + 8)
15x + 40
Answer:
The area is multiplied by 4
Step-by-step explanation:
4x4=16 (area 1)
4(x2)x4(x2)=64 (area 2 (with the measurements doubled)
64/16=4