How would i find the explicit formula for the arithmetic sequence -11,-3,5,12

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

Simone claims the initial value and y-intercept are the same thing on a graph. is she correct? if you know that a line has a slope of and a y-intercept of 7, what is the equation for that line in slope-intercept form?

Segment an is an altitude of right δabc with a right angle at a. if ab = 2, squared 5 in and nc = 1 in, find bn, an, ac.