Answer:
The correct answer is 42 tiles.
Explanation:
Chase's mom is building a rectangular tile patio in their backyard.
She is making the patio six tiles wide and seven tiles long.
We need to find how many rectangular tiles she has to buy in order to make her patio.
Thus the number of rectangular tiles required is given by 6 × 7 = 42 tiles.
Thus Chase should ask his mom to buy 42 tiles in order to make her her patio in their backyard.