Question

How do I simplify each expression?

Answer 1

for number 6 all you have to write is
2times 2times 2times 2times which is 16.

for number 7 you have to do 2 times 3 times 3 times -7 ( i dont have caculator right now so do it on your caculator.)

number 8) 9- 3 times 3 plus 1 times 1 equals 1


number 9) 2 plus 6 times 8 divided by 4 equals 14

Answer 2

you just have to solve them.
the first one would be 2x2x2x2=16
then for the following you bring in PEMDAS or GEMDAS which stand for parenthesis/grouping symbols, Exponents, Multiplication, Division, Addition, and subtraction.
the second one is 11 because it is 2x3x3-7 
                                                       2x9-7
                                                       18-7
                                                        11
the third one is 9-4x4
                        9-16
                        -7
the last one is 2+48/4
                       2+12
                       14