Answer:
The average rate will be -11000 dollars per year.
Step-by-step explanation:
The price of a house in 2005 = $250,000
The price of a house in 2010 = $195,000
at x₁ = 2005, f(x₁) = 250,000
at x₂ = 2010, f(x₂) = 195,000
Using the formula to determine the average rate of change for the
house each year.
Average rate = [f(x₂) - f(x₁)] / [ x₂ - x₁]
= [195,000 - 250,000
] / [2010-2005]
= -55000 / 5
= -11000
Therefore, the average rate will be -11000 dollars per year.
Answer:
19 ) B (<2 and <5)
20) A(20)
21 and 22 Don't know sorry
Answer:
y = 10
Step-by-step explanation:
2y - 5 = 15
make y the subject of the formula
2y = 15 + 5
2y = 20
y = 20/2
y = 10
Simplified: 
Restrictions: x CANNOT be 0 because then the denominator would become 0 and would not be possible
