Answer:
y = 50
Step-by-step explanation:
y = 2x^2
Let x= -5
y = 2(-5)^2
Power first
y = 2(25)
Then multiply
= 50
Answer:
1. 6x+18
2. -6m-8
3. 4-2b
4. -5y-10
Step-by-step explanation:
How far you want me to go? lol
X + y = -4 so y = -4 - x
y =2x - 1
-4 - x = 2x - 1
3x= -3
x = -1
y = 2x - 1 = 2(-1) - 1 = -2 -1 = -3
answer: x = -1 and y = -3
The speed is the ratio between the distance and the time:

Data:
d=6343miles
t=9h

Then, the plane traveled at a speed of 704.77 miles per hour.