Selma paid 17.64 for a 7.94-kg bag of dog food. a few weeks later, she paid $18.88 for an 8.39-kg bag at a different store. find the unit price for each bag. than state which bag is the better buy based on the unit price. round to the nearest cent ​

Explanation:

For store 1:  

You have to divide 17.64 by 7.94 which will be 2.22 per kg

Store 2: 18.88 divided by 8.39 = 2.25 per Kg

I say the 1st store is better to buy because its cheaper than store 2.

Hope this helps!!! :)

The most commonly used test is the PCR test.

The other commonly used testing method is CRISPR testing.