Answer:
7.1 inches
Explanation:
Total inches grown last year by matthew = 2.7inches
Total inches grown this year by Matthew = 4.4 inches
Total inches grown by Matthew over the last two years combined will be the sum of heights of matthew for both the previous year and the current year.
Total inches grown = 2.7 inches + 4.4 inches
Total inches grown over the last two years = 7.1 inches