Is there a difference between Log, in and lg?? Cause the more I looked into it the more confusing it got So I really appreciate all the help​

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

What does x = in this equation x+3+2x=x+5

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.