Answer:
D because the decimal had to move 6 places to be written in Scientific notation So 0.0000045 make sure you click d with 5 Zeros AFTER the decimal point
Step-by-step explanation:
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77.78
C
(-2x+9-3x-4)
-2x-3x+9-4
-5x+5
16x+12
4 sides
2*(5x-2 )
10x-4
2(3x+8)
6x+16
10x-4+6x+16=16x+12
