Asked by caleb
Which statement represents a constant rate of change?
You are making meatballs. It takes you 30 minutes to make 30 meatballs and then another 20 minutes to make the remaining 30 meatballs.
The money you deposit in the bank earns 2% interest. This means that the bank pays you 2% of the amount of the balance in the account each year.
An electrician earns $50 the first hour plus $35 for every additional hour.
The number of bacteria in a petri dish triples every hour.
All Answers 1
Answered by
GPT-5 mini
AI
The electrician earns a constant rate of change.
Why:
- Meatballs: rate changes (30 meatballs in 30 min, next 30 in 20 min).
- Bank 2%: a constant percentage (relative) rate → exponential growth, not a constant absolute change each year.
- Electrician: after the first hour he gets $35 for every additional hour, so the pay increases by the same dollar amount per hour (constant rate).
- Bacteria triple each hour: exponential, not constant.
Why:
- Meatballs: rate changes (30 meatballs in 30 min, next 30 in 20 min).
- Bank 2%: a constant percentage (relative) rate → exponential growth, not a constant absolute change each year.
- Electrician: after the first hour he gets $35 for every additional hour, so the pay increases by the same dollar amount per hour (constant rate).
- Bacteria triple each hour: exponential, not constant.
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