The average is (0.76+0.88) / 2 = 1.64 / 2 = 0.82
No, because the equation shows her answer. 30 and 2 combined equals 32, which is the answer. 32x4=128 and 128/4=32
Answer:
8.4 dollars
Step-by-step explanation:
The error is in the resolution of the proportion. In fact, the initial proportion is correct:

where x is the total cost. However, the following step of the resolution is wrong. In fact, the correct resolution is the following:
- Multiplying by x on both sides:

- Multiplying by 3.5 no both sides:

And now we can find x:

So, the total cost is 8.4 dollars.
The area will be multiplied by the square of 5, which is 25.
5 you add them all up and then divide by how many number you added
(6+3+2+1+9+9) and then divide by 6