Question

Ethan practices the piano 15 minutes a day. To identify the total number of minutes he practices, he uses the function rule: y

15x.
y = total minutes he practiced
x = number of days he practiced


Find f(x) = 10.

Answer 1

The value of x in f(x) = 10 is: x = 2/3 days or 16 hours

How to solve the function?

Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.

Given that, Emily practices the piano 15 minutes a day.

The function to represent the given situation is y = 15x

where, y= total number of hours and x= number of minutes

Now, f(x) = 15x

When f(x) = 10, we have:

15x = 10

x = 10/15

x = 2/3 days = 16 hours