H people I need help pls with this question. It's for 7th grade (: ( solve for x your answer must be simplified.)

The first five terms of a linear sequence are given below. 7 , 12 , 17, 22 , 27 , what is the next term of the sequence?

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =