4. B is the answer
5. A is the answer ( y is the same , x are the opposite)
6. C
7. D
3 times 0.78 = 2.34 dollars
5.00 - 2.34 = 2.66
So your change is $2.66
The answer is (2 1/2) but without the brackets
Step-by-step explanation:
best of luck dear.........