Answer:

Step-by-step explanation:

3/4 and 2/5 have a common denominator which is twenty so you can rewrite the equation with just knowing that



You can then multiply both sides by twenty to solve this equation.
Hope this helps.
Answer:
-1
Step-by-step explanation:
parallel lines always have the same slope
<h2>SOLVING</h2>

How do the graphs f(x) and f^-1(x) relate?

These two functions are inverses of each other.
That's the way these two are related to each other.
f^-1(x) is the inverse function of f(x), and f(x) is the inverse function of f^-1(x).




Answer:
23%
Step-by-step explanation:
if 100% of it = $680 then multiply 100 and the sale price then divide it with actual price to find what's % is 523.60
100 × 523.60 ÷ 680 = 77
if 523.60 is 77% then the discount amount is 23%