Step-by-step explanation:
First put it in point slope for y = mx + b
y = -2x + 5
Now plug in what ever number you want for x and solve.
Answer:
f(1) is 1, just look at the x-value provided in the parenthesis. f(1) means function value at x = 1, and the graph shows that at x = 1, y = 1.
There are no factors of 20 that add up to 7.
Factors of 20 are:
1*20
2*10
4*5
150*5.5=825
If I'm right, the actual length of the border is 825 miles. Hope I helped!