Answer:
b
Step-by-step explanation:
because we can not some times change the places in addition so b is the correct answer
X=4 x=-4 Due to the difference in squares theorem
Answer:
4
Step-by-step explanation:




Where is the rest of the question
Hey! The drink was $1.15 because $10 minus the cost of the lunch ($7.75), tax (0.47), and what was given back in change (0.63) leaves you with $1.15