Can someone me answer this? the attachment are the questions. i'll give brainliest to the one most explained and actually makes sense. i'll report anyone who says random answer, and answer all of them not just one. you.

When you answer this can you explain

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.

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.