A) profit/original price x100 =percentage profit
(Profit: 360-300=$60)
=60/300 x100
=20%
b) two cameras (original price): 300x2= $600
two cameras (price sold): 360x2 = $720
Profit without discount: 720-600= $120
120-100= $20 discount
20/720 x100 =2.78%
3 x 2.5 = 7.5
7.5 x 1.05 = 7.8750
Note : remember to always line up the decimal points.
Hope this helps
5,880,000 in scientific notation is: 5.88 x 10^6
Since you gave no parenthesis: Remember to follow PEMDAS. Note that anything with the power of 0, the answer will become 1
10^0 = 1
8 x 1 = 8
8 is your answer
hope this helps