Remove the parentheses from the following expression, and combine like terms: (a + b - c) + 3a - 2c

4a + b - 3c

Step-by-step explanation:

you combine a and 3 a, there is nothing to add to be, and since both c's are negative you get - 3c

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i

2: 10

step-by-step explanation: