Answer:
40
Step-by-step explanation:
area= length times width
1 times 10= 10 times 2= 20
2 times 10=20
20+20=40
Your answer would be -12 because of her answers
Answer:
81
Step-by-step explanation:
First, you combine like terms using PEMDAS
5+4 * (2+7)
5+4 * (9)
9 * 9
9 * 9 = 81