BRAINLIEST ANSWER WILL GET BRAINLIEST

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 sales tax for an item was $8.40 and it cost $420 before tax. find the sales tax rate. write your answer as a percentage.

Victoria created the scatterplot below based on the data in the table for the ages and heights of some teachers in her school. she wants to see if a teachers heigh depends on his or her age. what did she do wrong when she created the scatterplot