Write a quadratic function in vertex form whose graph is shown.

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

Write the factored form of this trinomial 9x^2+18x-7

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school.each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220