Answer : 15
to find the scale you divide. 45/3 = 15.
this gives you the scale 15
i don’t know how else to explain it but i hope this helps
Answer:

Step-by-step explanation:
When variables have negative exponents, switch their positions.

C
Step-by-step explanation:
1.3*3=3.90
3.90*35=136.50
136.50 is all you need to provide at least three of the most expensive items.
You still have 13.50 left over