Question

Anna is going to play guitar in her school's annual concert. If she starts by practicing for one hour per day and increases the time by 30 minutes each day, how long will she practice on the seventh day? a. 140 minutes b. 210 minutes c. 240 minutes D. 300 minutes

Answer 1

on day one she starts of with 1 hour so it will be 1+30x. X being the number of days so by the seventh day Anna would practice for 240 minutes. 

Answer 2

As per arithmetic progression, Anna will practice on the seventh day for 240 minutes.

What is an arithmetic progression?

"Arithmetic Progression is a sequence of numbers in order, in which the difference between any two consecutive numbers is a constant value."

Anna practices on the first day for 1 hour

$= 60$ minutes

She increases the time by 30 minutes each day.

Therefore, on the 7th day she will practice for

$= [60+(7-1)30]$ minutes

$= 240$ minutes

Learn more about an arithmetic progression here: https://brainly.com/question/24873057

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