Evaluate the expression:
10 - 3

10 - 3 = 7

I hope this helps!

7

Step-by-step explanation:

here ,

= 10-3

= 7

so the answer of the question above is 7,,, hence proved

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce