I do not understand how to solve it
Answer:
1. Whole number
Step-by-step explanation:
It's a negative number, but it is not a decimal, therefore it is a whole number.
Answer:
y = 3
Step-by-step explanation:

It should be Acute Scalene
Answer:
B. Infinitely many
Step-by-step explanation:
5x+48+7x=12(x+4)
multiply 12 to x and multiply 12 to 4
5x+48+7x=12x+48
add 5x to 7x
12x+48=12x+48
the equation of both sides are the same since both equations are the same, the answer is infinitely many.