Answer:
120
Step-by-step explanation:
15x8=120 so that the answer
Relative frequency = (number of times an item appears) /(TOTAL numbers)
Relative frequency (selecting Red ) = 13/30 =0.434
The point-slope form:

- slope
- point
We have the point
and the slope 
Substitute:

Answer:
40
Step-by-step explanation:
ABD-CBD=ABD
70-30=40