What is an equation of rhe line that is perpendicular to -x+2y=4 and passes through the point (-2,1)

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

List the sides of δrst in in ascending order (shortest to longest) if: a ∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

How can (square root of 25) ^2 be rewritten?