Please can you explain this to me? I have no idea what it means. Find an equivalent system of equations for the following system:

x + 2y = 2
−4x + 4y = −8

Askyscraper is 396 meters tall. at a certain time of day, it casts a shadow that is 332 meters long.at what angle is the sun above the horizon at that time?

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?

In stepmber, daniel and justin opened a business. during their first three months of business, their average monthly profit was $51. if during their first month, they lost $29, and during their second month, they gained $115, what was their profit or loss for their third plzzz i will give you 299 points