Write and solve an equation to find the answer?

Beth learns to perform 2 vocal pieces during each week of lessons. After 5 weeks of voice lessons, how many pieces will Beth be able to sing, in total? Write and solve an equation to find the answer.

1 Answer
May 22, 2018

f(w)=2w;
f(5)=2(5)=10 songs.

Explanation:

If Beth learns two vocal pieces every week, than the number of songs she has learned can be expressed as 2, w times, where w is the number of weeks she has been learning pieces. Expressed formulaically,

f(w)=2w, where f(w) is the number of pieces Beth has learn after w weeks.

To find how many pieces she has learned after five weeks, we can plug 5 into our formula, which gives us

f(5)=2(5)=10 songs.