(5x-7)2 + 140x
= 25x2 - 70x + 14 + 140x
= 25x2 + 70x + 14
= (5x+7)2
I think the answer is ten trillion, seven million.
Answer: 75 feet²
Step-by-step explanation:
The scale means that for every one unit in the scale drawing, it is 30 units in the actual room. We will convert the dimensions using proportions.

x = 90
-

x = 120
The area of a rectangle can be found by multiplying the length by the width:
A = L * W
A = 90 * 120
A = 10,800 inches²
To get this into square feet, we will divide by 144. Why? There are 12 inches in a foot. 12 times 12 is 144.
10,800 inches² / 144 = 75 feet²
The area of the room, in square feet, is 75 feet².
Answer:
In order to minimize cost the outlet must order 60 units 15 times a year.
Explanation:
Theoretically, the EOQ is the optimal order quantity that a firm should purchase in order to minimize its inventory costs (holding costs are included here), and costs of placing an order.
Mathematically:
EOQ= 
Where:
D= demand
S= cost of placing an order.
H= holding cost (per unit and per year).
In the statement, we identify each of these values:
D= 900
S= 4
H= $2
EOQ=
=√2*4*900/2= 60
Times per year= 900/60= 15
Answer:
28 - 3h
Step-by-step explanation:
We must do the work seen inside parentheses first.
Thus, we havve 4(7) - 3h, which simplifies to
28 - 3h