Joshua earns $9 per hour and $6 for each delivery he makes. he wants to earn more than $155 in a 8-hour workday. what is the least amount of deliveries he must make to reach his goal?

Answer to your question:

Let no. of hours Joshua works be x
no. of he makes be y

Money he earns=9x+6y

According to question,

9 (8)+6y>155
72 +6y>155
6y>155-72
6y>83
y>83/6
y>13.8

So, Joshua must do atleast 14 deliveries to reach his goal.

Hope it helps ^_^

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.