How would you represent 3, 358 below sea level as an integer

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.

What is the measure of angle 1? a.28 b.152 c.168 d.64