Answer:
see the procedure
Step-by-step explanation:
we have

Remember that

To convert m to km multiply by (1/1,000)

To convert sec to min multiply by (1/60)
substitute

Answer:
y = x-2
Step-by-step explanation:
y = mx + b as an equation
m = slope
slope = (change in y) / (change in x) = (y₂-y₁)/(x₂-x₁) = (y₁-y₂)/(x₁-x₂) = (2-(-2))/(4-0) = 4/4 = 1
y = 1*x + b
plug a value in, e.g. (0, -2)
-2 = 1 * 0 + b
-2 = b
our equation is thus
y = x - 2
A.) 1/2
B.) 3
For the first one, just plug the value of x (4) everywhere you see x in the formula.
For the second one, place 1 wherever you see f(x)
Hope this helps
You FOIL
9x^2-15x+21x-35
Combine like terms
9x^2 + 6x - 35