84 is your awnser if i helped i hope im in fourth grade so dont judge
Answer:
D. 
Step-by-step explanation:

To rewrite a mixed number as an improper fraction, first, multiply the whole number by the denominator.

Then, add this number to the numerator.

This number is now the numerator of the fraction. The denominator stays the same.

I hope this helps!
Answer:
9840
Step-by-step explanation:
1 - 18% = 82% survive, so the number available for sale is ...
0.82 × 12,000 = 9,840
Answer:
15 and 108
Step-by-step explanation:
3*(30-25)=3*5=15
4*(12+15)=4*27=108