Answer:
Step-by-step explanation:
Q8.
[tex]3(4r+5)-2(3r+4)=7 \\ \Rightarrow 12r+15-6r-8=7 \\ \Rightarrow 6r=0 \\ \Rightarrow r=0[/tex]
Q9.
The price George pays is [tex]30+0.18m[/tex] dollars. If he wishes to spend strictly less than $55 on a car then the required inequality is [tex]30+0.18m < 55[/tex].
Q10.
[tex]m=5h+10 \\ \Rightarrow m-10=5h \\ \Rightarrow \frac{m-10}{5}=h[/tex]
Q11.
[tex]m=\frac{\Delta y}{\Delta x} = \frac{24-8}{6-1}=3.2[/tex]
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 [tex]y=3.25x+4.60[/tex]
