write an expression for the sum of your earnings for 3 weeks and your friends earnings for 2 weeks if you each work r hours per week and your friend received $15.00 in tips per week
To find the expression for the sum of your earnings for 3 weeks and your friend's earnings for 2 weeks, we need to consider the number of hours you both work per week and the amount of tips your friend receives.
Let's start by defining some variables:
- Let's say you work "r" hours per week.
- Your friend receives $15.00 in tips per week.
To calculate your earnings for 3 weeks, we multiply the number of weeks (3) by the number of hours you work per week ("r"). So, your earnings would be 3 * r.
To calculate your friend's earnings for 2 weeks, we multiply the number of weeks (2) by the amount of tips your friend receives per week ($15.00). So, your friend's earnings would be 2 * $15.00 or 2 * 15.
Therefore, the expression for the sum of your earnings and your friend's earnings would be:
3r + 2 * 15
Simplifying this expression, we get:
3r + 30
So, the final expression is 3r + 30.