When solving the equation, which is the best first step to begin to simplify the equation? -2(x+3)=-10 Will mark you Brainiest.

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!