HELP ME I VERY STRESSED(⓿_⓿)
This pattern follows the rule add 9. What are the next 3 terms?

An image of a pattern. Term one has 9 triangles, term two has eighteen triangles, term three has twenty-seven triangles.

A. 36, 45, 54
B. 39, 48, 57
C. 42, 51, 60
D. 54, 63, 72

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

How many solutions does the nonlinear system of equations graphed below have?

The data set represents the ages of players in a chess club. 27, 34, 38, 16, 22, 45, 54, 60. what is the mean absolute deviation of the data set?