Simplify the following expression: 2x − 8y + 3x2 + 7y − 12x

Question options:

3x2 − 14x − y

3x2 − 10x − y

3x2 − 10x − 15y

3x2 + 10x − y

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

The frequency table shows the results of a survey asking people how many hours they spend online per week. on a piece of paper, draw a histogram to represent the data. then determine which answer choice matches the histogram you drew. in order here is the.. hours online: 0-3, 4-7, 8-11, 12-15, and 16-19. frequency: 5, 8, 10, 8, 7 answer for the question is in the picture! : )