Answer:
360,360
Step-by-step explanation:
This is called a Permutation with repetition, we want to know in how many ways we can arrange a certain ammount of elements (normal permutation), BUT some of those elements are identical.
The formula we use in these cases is:

where n is the total amount of elements, n1 is the amount of repeated elements of the type 1, n2 is the amount of repeated elements of the type 2, ni is the amount of repeated elements of the type i.
In this particular case we have:
(total amount of shirts)
(small shirts)
(medium shirts)
(large)
(extra large)
then the amount of orders the shirts can be sold at (arranged) is:

You can spend about 3.54 per square ft.
In order to find this we will need to figure out how many square ft. there are exactly. We can do this by doing 20 x 12, which is 240. Now, to figure how much we could spend per square ft., we would have to do 850 / 240, which is(rounded) 3.54.
This problem asks, as simply put, the value of the function at x=3. So, plug in three to find your answer:
2(3) + 1 = 7, so g(3) is 7
Answer:
A. d/2 = r
B. r=65 miles/hour
Step-by-step explanation:
A. d/2 = 2r/2
B. Using the formula you found for R it is
130/2= r, therefore r = 65