Sierra is saving for a skateboard. Sierra's aunt gives her $45.00 to start, and she saves $3.00 each week. The expression 45 + 3w

gives the amount of money she will save after w weeks. How much will Sierra have saved after 4 weeks?

Sierra will save $
after 4 weeks. Remember to include dollars and cents in your response.

1 answer

To find out how much Sierra will have saved after 4 weeks, we can use the expression provided:

\[ \text{Amount saved} = 45 + 3w \]

where \( w \) represents the number of weeks.

Substituting \( w = 4 \):

\[ \text{Amount saved} = 45 + 3(4) \]

Calculating \( 3(4) \):

\[ 3(4) = 12 \]

Now, adding that to 45:

\[ 45 + 12 = 57 \]

So, Sierra will save $57.00 after 4 weeks.

The final answer is: Sierra will save $57.00 after 4 weeks.