SOLUTION: I am having trouble with the order of operations with this equation: "Evaluate each expression when n=7. 10n^2-100 my sons answer: is 40 I dont know if this is right please

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Question 226302: I am having trouble with the order of operations with this equation:
"Evaluate each expression when n=7.
10n^2-100
my sons answer: is 40
I dont know if this is right please help
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
Parentheses Exponentiation Multiplication Division Addition Subtraction ___ PEMDAS

the caret symbol ( ^ ) is for exponentiation

7 squared ___ times 10 ___ minus 100

49 * 10 = 490

490 - 100 = 390