Answer:
40
Step-by-step explanation:
f(4) = 3(4²) - 2(4)
= 3(16) - 8
= 48 - 8
= 40
when x=4, f(x) = 40
Answer:
ok
Step-by-step explanation:
i will eat a dsmart cookie
Answer:

Step-by-step explanation:
First draw a line. I will put it in an attachment so you can see the line.
Now choose to points on the line to use the slope formula.
(0,15) and (3,13).
Slope formula: 
Plug in the information needed using the two points chosen.

The slope is
.
Now use point-slope formula.
Point-slope formula: y-y1=m(x-x1)
y-15=
(x-0)
y-15=
x-0
Subtract 15 from both sides.
y=
x-15
Hope this helps!
If not, I am sorry.
For this case we have that by definition, the slope of a line is given by:

Where:

They are two points through which the line passes.
According to the statement we have two points:

Substituting we have:

Thus, the slope of the line is:

Answer:

X is 30 because we can minus 60on both sides and add 3x on both sides to find the answer