Question

Question is in attachment. please answer quickly.

Answer 1

Explanation:

Q8.

`3(4r+5)-2(3r+4)=7 \\ \Rightarrow 12r+15-6r-8=7 \\ \Rightarrow 6r=0 \\ \Rightarrow r=0`

Q9.

The price George pays is
`30+0.18m` dollars. If he wishes to spend strictly less than $55 on a car then the required inequality is
`30+0.18m < 55`.

Q10.

`m=5h+10 \\ \Rightarrow m-10=5h \\ \Rightarrow (m-10)/(5)=h`

Q11.

`m=(\Delta y)/(\Delta x) = (24-8)/(6-1)=3.2`

Then I can't really tell the y-intercept because the graph is so small however by elimination of the multiple choice options we see the graph is best modelled by
`y=3.25x+4.60`