If f(x) = 3x + 4, find f(–4).

f(-4) = -8

Step-by-step explanation:

Another way you can look at it is this way.

y = 3x+4; where x = -4. In this way, you just need to find what y is.

Since we are given x, all we have to do is replace x with it's numeric value (-4).

Or in the same format they gave:

In the format they gave, they said what is the function of -4.

f(-4) = -8

Draw a diagram to illustrate the problem as shown below.

Calculate the volume of the empty cone.
V₁ = (1/3)π*(6 in)²*(10 in) = 120π in³

Calculate the volume of the sphere.
V₂ = (4/3)π*(1.5 in)³ = 4.5π in³

The volume that can be filled with flavored ice is 
V = V₁ - V₂ = 115.5π in³ = 362.85 in³

Th volume is 115.5π in³ or 362.9 in³ (nearest tenth)