Answer:
the second one
Step-by-step explanation:
trust me i've done this before
the school purchased 742 items in total.
Just add 256+332+154
which equals...742. :)
cells of Jennies skin were not burned.
Step-by-step explanation:
Given,
Burned skin cells = 
This represents 2% of total skin cells.
Let,
x represents the total number of skin cells.
2% of x = 

Dividing both sides by 0.02

Number of not burned cells = Total - burned
Number of not burned cells = 
Number of not burned cells = 
cells of Jennies skin were not burned.
Keywords: percentage, division
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