Question

Brianna practices the piano for 30 minutes per day. Write an expression for the number of hours she practices after n days.

Find the number of hours Brianna practices in 2, 4, and 10 days.

(Thank you in advance for helping me)

Answer 1

Answer: 1/2 * n

1 hour of practice in 2 days

2 hours of practice in 4 days

5 hours of practice in 10 days

Explanation:

60 minutes=1 hour

30 minutes * 1 hour/60 minutes=

30*1/60=

30/60=1/2 hour.

1/2 * n

1/2 * 2 = 1 hour of practice in 2 days

1/2 * 4 =

4/2 = 2 hours of practice in 4 days

1/2 * 10=

10/2 = 5 hours of practice in 10 days

Answer 2

The answer is 1/2

Explanation:

Brianna practices the piano 30 minutes each day.
Than she practices in d days.
30 minutes = 1/2 hour
The total number of hours she practice = (d × 1/2) hours