20% = 0.20
50 * 0.20 = $10 discount
50 - 10 = 40
The price after 20% discount is $40
Coefficient of 'x'= 5a
Coefficient of 'x square'= -17
Constant term = 14a
Dur
1 more than 2 times input
input is x
1 more than twice x
1+2x
f(x)=2x+1
Answer:
2nd - (w - 5)(w + 5)
4th - (-4v - 9)(-4v + 9)
Step-by-step explanation:
1. The first option shows an expression multiplied by its opposite(x -1), so therefore, it does not show the difference of squares
2. The second option does show the difference of squares because it is in the form (a + b)(a - b)
3. The third option is just a square because the same expression is multiplied by itself.
4. The fourth option is the difference of squares because it is in the form (a + b)(a - b). a equals -4v and b equals 9 in this case.
5. The fifth option is not the difference of squares. No term in common in both expressions
6. The sixth option is just a square because the same expression is multiplied by itself.
In all, there are two options that are the difference of squares, the 2nd and 4th.
