It is given in the question that f is a one-to-one function.
And for a one-to - one function,
If

So we will get

Answer:
300
Step-by-step explanation:
15 * 20 = 300
she spent 3/5 * 300 = 180
and saved 2/5 * 300 = 120
Answer:
0.69
Step-by-step explanation:
Just did it on edge and got it right
Yes because they both have the same degrees, but one is slightly rotated