Let the cost of the hair dryer equal x.
The net cost plus a 40% markup equals 42, set up an equation and solve forex.
1.4x = 42
Divide both sides by 1.4
X = 42 / 1.4
X = 30
The net cost was £30
Y= D.5 __________________________________
Log_10 100 is the same as 10 to the x power is 100
10^x=100
10^2=100
the answer is 2
Negative integer.
-761 + 317= -444
Plug the answer in:
-761 - (-444)
= -317
Reminder: when multiplying two negatives, you get a positive.
For the first one, it would be 5/3 and 19/3
the second one would be 40
