Answer:
IK
Step-by-step explanation:
If you draw out the triangles it is easier to see
1.) 9 cm
2.) 5 cm
3.) 10 in
4.) 4 in
Sole for f by simplifying both sides of the equation then isolating the variable so that means f=-40 over 3 for number one
for the second equation you do the same thing you did for number one and the answer will be
b=8
B is because any form of y=Mx +c is proportional