Answer:
1. First we need to make up a number that represents s so let's go with 7.
S=7
M=140
2. Alex had 20 dollars worth of cash and his brother had 10 he withdrew money from his bank account and now has 20 dollars.
Step-by-step explanation:
When we have 7 we need to multiply by 20 because each student gives 20 dollars.
7x20=140 there for the m is 140
The product is: 25x^2-5xy-6y^2
9^3 is 729 so x^3 = 512 and you find it to be 8
