Answer:

Step-by-step explanation:
-This is an addition/subtraction problem.
#We subtract the sum of the first two expression from the third expression:

Hence, the expression
must be added to the first two.
Answer:
area of figure is 6 unit sq
Step-by-step explanation:
area =1/2×base × height
Answer:
Chili I think, I don't know for certain
Step-by-step explanation:
Answer:
$3,000
Step-by-step explanation:
30 children each earned $100
so

so the school collected $3,000