Find the area of this figure

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

‼️‼️‼️‼️‼️the pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas. if the pressure is 6 pounds per square inch when the temperature is 440 f, find the pressure exerted when the temperature of the gas is 380°f. (show work)