Answer:
a 30 b -21
Step-by-step explanation:
a 5x = 5(6)
= 30
b 3y = 3(-7)
= -21
I know you have 1 and 3 right but I'm sorry about not knowing the rest.
The answer is B because n is equal to the number of notebooks. you can not exceed the amount of money that you have to buy the notebooks
Three solutions:
x=0
x=7/2
x=-6
