Answer:
90 mm^2
Step-by-step explanation:
split into two rectangles.
First rectangle: 5 x 6 = 30 mm^2
Second rectangle: 10 x 6 = 60 mm^2
30 + 60 = 90 mm^2
Answer:
42+56+7.5h ≤ 300
≤ means less than or equal to and Julie does not want to go over 300 so this would be the correct symbol to use