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
bartholomew
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.

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