This is the concept of algebra, we are required to right an expression that Tamkeea will have to make in order to get her original amount back;
Let y be the original amount and x be the amount that remained after she spent $28. The original amount can therefore be recovered using the model given by:
original amount=[amount spent]+[remaining amount]
y=x+28
Answer: <span>-x2 + 120x = 1,800
</span><span>
She plans on using the side of the barn as one side of her paddock so it has 3 sides. Since the width is shorter, it will be more efficient to have 2 widths (1 lengths and 2 widths). Because J</span><span>ill has 120 feet of fencing to use, you can get this equation:
120ft= 1L +2W
</span>1L= 120-2W
If you insert it into area formula it would be:
area= L*W
area= (120-2W) *W
area= 120W- 2W^2
-2W^2+120W= area
<span>Since x represent the width of the paddock and the area is 1800 the equation become
</span>-2X^2+120X= 1,800
Answer:
f(4) = 15 * 1.4^4 = 57.624 inches²
The answer to this question is 49
