Answer:
f=ab/a+b
Step-by-step explanation:
Let's solve for f.
1/f=1/a+1/b
Price after off =80- 1/4 * 80 = 80-20 = $60
Coupon discount = 60*10/100 = $6
So, he have to pay, 60-6 = $54
Answer:
2a2 + 4a + 7
Step-by-step explanation:
As, - (2a3 - 3a2 + 4a + 6) + (2a3 + 5a2 + 7)
= 2a2 + 4a + 13
Answer: -28
Step-by-step explanation:
Answer:
Find the graph that has (2,0)
Step-by-step explanation:

+ x +x

3x - 2 = 4
+ 2 + 2
3x = 6
/3 /3
x = 2
Your image is blurry, but the point that has (2,0)
Hope that helps!