Question

please help
number 2. find the x coordinate that yields the maximum 45.

Answer 1

its number 2

Answer 2

@Owlcoffee

Answer 3

A big problem I had when I was solving these, was the simple fact that we search of all the value of x, that satisfy the inequality, so looking at the exercise:
\[4x>2\]
we are asked "What values of x, multiplied by 4 gives me a number greater than 2?"
So what we will do, is transform the ">" sign into a "=" to help us find the exact value of x that multiplied by 4, gives us a value of 2:
\[4x=2\]
\[x=\frac{ 2 }{ 4 }\]
\[x=\frac{ 1 }{ 2 }\]
So, in the value of 1/2, the inequality is actually 2, but since we are asked rigourously greater than 2, we shall study it's sign:
1/2
-----------I------------------>x
S:(1/2;infinity)
So we can easily deduce that any value of x greater than 1/2 will satisfy the inequality.
the graph, would look like this:

Answer 4

okay thank you how about the next problem after that?

Answer 5

because you actually did number one