10.5x = 7.5x + 30
10.5x - 7.5x = 30
3x = 30
x = 30/3
x = 10
10.5(10) = 105
7.5(10) + 30 = 75 + 30 = 105
they need to purchase 10 t-shirts from each company for a total of $105 for each company
Answer:
0.55A dollars
Step-by-step explanation:
If 45% of the money was spent, then the percentage left was
100% - 45%, or 55%.
Thus, to answer this question, we multiply (A dollars) by 0.55:
0.55A dollars was left after the expenditure of 45% of the original amount.
Ok, so dy/dx=0 at the point (0,3) that is where x=0 and y=3.


Now, f'(x)=0 when x=0.
Therefore:

Now:


But when x=0, y=3, therefore:
Answer: 6 inches
Step-by-step explanation:
If rectangle 2 is 3 times as long as rectangle 1, then all we hae to do is divide the width by 3 (The width is 18)
18 ÷ 3 = 6