Divide 12 on both sides of the equation to get h by itself so it should be..15
The answer to the question is 9,700.
14 hours.
Work backwards. From travel, getting ready and sleep he needs 9.5 hours. From 11am to 10:30am is 23.5 hours. Subtracting the two you get 14 hours.
She will need 8 more barbies, to reach a total of 12.
Hope this helps!
M=slope
b=y-intercept
y and x are coordinates
hope this helps, that is a much as I can give you with this little of information