You have to do the math right to get this right. so just add then multiply add them the subtract
-3.6h = -10.8
-3.6h / -3.6 = -10.8 / -3.6
h = 3
Answer:
(-10,-7)=x1,y1
m=10/3
we have,
y-y1=m(x-x1)
y+7=10/3(x+10)
3y+21=10x+100
y=10/3x+79/3
so the value of b is 79/3
Since d=9.5h is her rate on saturday
so if she babysit for 6 hours on friday she earns d=9.5(6)=57
she babysat of friday and got 63 for 6 hours
so she earned more amount per hour on friday
note that a division sign can be signified by "/"
5 divided by r can be shown as a variable expression of: 5/r
Another way to show is: 5 ÷ r
Answers are bolded
hope this helps