Answer:
x≤0
Step-by-step explanation:
The first expression is equivalent to B
The second expression is equivalent to A
The third expression is equivalent to C
You are basically adding like terms. For example for the first expression, it is 7x^2 + 2x^2, which equals 9x^2. Remember since you're adding, do not add the exponents.
Hello!
The midpoint formula is basically an average of x and y.
It is also written as:
.
With the formula above, we can substitute the given points into the equation, and simplify.

Therefore, the midpoint between points H and J is choice D, (6, 3.5).
Step-by-step explanation: x<-9