Answer:
B) f(g(x)) = 15x² + 18
Step-by-step explanation:
Plug the entire equation of g(x) in for the x in f(x)
f(g(x)) = 5(3x² + 3) + 3
f(g(x)) = 15x² + 15 + 3
f(g(x)) = 15x² + 18
Answer:
The ladder reaches 
Step-by-step explanation:
In the first case we have

In second case let the height be 
We have

We know that

Substituting

The ladder reaches 
Answer:
The Y-intercept value for the regression equation is -2
Step-by-step explanation:
The linear regression has the form: y = a + b*x, where a is the Y-intercept and b is the slope. To find the a compute the following:
a = MY - b*MX
where MX and MY denotes mean for the X and the Y respectively. Replacing:
a = 6 - 4*2 = -2
Answer:
4x-20 is the same as x+x+x+x-20