52 is the sum of 23 and v translate into equation

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5