Answer:
Step-by-step explanation:
Answer:
The change received by the customer is $7.
Step-by-step explanation:
First, write the given expression for the change when paying with $50.

Evaluate the parentheses:

Now add the numbers inside the parentheses.

Subtract the numbers.

Hence, the change received by the customer is $7.
It will take the factory 45 hours to make 30 lawnmowers.
Step-by-step explanation: