Distribute the 2 into the 2x and -y
Then add “like terms” which are 3x and 4x... 3y and -2y
Which then becomes 7x+y
There are no more “like terms” so that is your final answer
I belive that b is the answer.
Answer:
1
Step-by-step explanation:
using the rule of exponents
= , then
× × × × ×
[ × = 1 , × = 1 , × = 1 ]
= 1 × 1 × 1
= 1
After the first day, 1/3 of the original amount remained:
... (1/3)·45 = 15
After the second day, 2/3 of that amount remained:
... (2/3)·15 = 10
The bookstore has 10 copies left.