Question

Mrs. gibbs goes to the store to buy aa and 9v batteries. the store has 12 aa batteries and 15 9v batteries in stock. mrs. gibbs needs at least 6 aa batteries. in all, she wants to buy at least 20 batteries. mrs. gibbs buys 7 aa batteries. how many 9v batteries could she buy?

Answer 1

I know I'm late but on K12 the answers are 7,13 and 12,12

Explanation:

They are in the shaded area. I'm 100% btw

Answer 2

The total batteries bought should be equal to or more than 20
If she buys 7AA batteries, then she must buy
20 - 7
= 13
At least 13 9V batteries