Answer:
Perimeter of Triangle: 

Step-by-step explanation:
The perimeter is the sum of all of the sides of the triangle.
Hence, the perimeter 
Since the perimeter is 90,
.
Subtract 15 from both sides:


Divide both sides by 6:


Answer:
Avg speed 550 miles per hour
Step-by-step explanation:
with the wind 1200 miles traveling
1200/(550+50) = 2 hours
Against the wind
1000/(550-50) = 2 hours
Answer:

Step-by-step explanation:
Notice when x increases 1, y is 4 times the previous one, so
the function is like 
To determine the constant C, put any pair of (x, y)
Use x = 0, y = 0.2, so
0.2 =
= C * 1 = C
then 
One Solution: Simplify to get 5x+4=5x+4
Answer:
Rotated then translated
Step-by-step explanation: