Answer:
27
Step-by-step explanation:
Area= 19.5× 7.2= 140.40 or 140.4
Step 2 was his error.
The following problem is solved by Alan:

In solving for x, you have to cross multiply between the numbers.
In that case, step 2 would look like this:
(25)(x) = (8)(200)
NOT THIS:
(8)(x) = (25)(200)
Now continue all the way.
25x = 1600
x = 1600 ÷ 25
x = 64
Answer:
Step-by-step explanation:
-8( - 20+ (-4)2) = 32
-8(-20 + 16) = 32
-8(-4) = 32
32 = 32
Answer:
25%
Step-by-step explanation: