(PRE-ALG) Jackie mowed 15 lawns in June, 23 lawns in July, and 15 lawns
in August. Use properties and mental math to answer each question.
a. How many lawns did Jackie mow over the summer?
b. Jackie put $4 in her savings account for each lawn she mowed.
How much money did Jackie save over the summer by mowing lawns?
(use distributive, identity, associative, or communative properties)