$21.00
let the original price = 100%
then the discount price = 100 - 15 = 85%
divide $17.85 by 85 to obtain 1% then multiply by 100 to obtain original price.
original price = $17.85 ×
= $21
the answer is C................................
52s + 30b because 52 x s + 30 x b = 52s + 30b
Answer:
Step-by-step explanation:

Answer:
Okay so number 3 is either undefined or Zero. I always forget which is which.
Step-by-step explanation:
But for 1 and 2 use your solution m=rise/run. Or you could count the ways down, like say, for number 1 it runs over 3 from a point and goes up till the next point. I hope this helps.