Answer:
36 students speak both english and french
14 students speak only english
The answer is A to change an exponent from negative to positive, just move it into either the numerator or denominator depending on where it is to begin with.
First you would divide 45 by 9 to see how many times it will double which gives you 5. Then, you would multiply 2000 by 2^5 (or just 2000x2x2x2x2x2) to get $64000
Umm im pretty sure d= -3x im not to sure