Answer:
<h2>(4x + 3) + (-2x + 4) = 2x + 7</h2>
Step-by-step explanation:
(4x + 3) + (-2x + 4)
= 4x + 3 - 2x + 4 <em>combine like terms</em>
= (4x - 2x) + (3 + 4)
= 2x + 7
Given:
The equation of a quadratic function is:
To find:
The equation of the axis of symmetry for the given function.
Solution:
If a quadratic function is 
, then the equation of the axis of symmetry is:
...(i)
We have,
Here, 
. So, the equation of axis of symmetry by using (i), is
Therefore, the correct option is C.
Answer:
1 1/2 x 4 1/2 x 5 = 33 3/4
Subtract to find the amount of the increase:
168 - 140 = 28
The increase in price was $28.
Now divide the amount of increase by the original price.
This will give you a decimal, then multiply the decimal by 100 to get the percent:
28 / 140 = 0.2
0.2 x 100 = 20% increase.
