heyy guys me and my friends are struggling on this question on our post test in anyone know how to do it could u lend a hand :(

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2