if each side of a square patio is increased by 4ft, the area of the patio would be 190 square feet. solve the equation (s+4)^2= 196 for s to find the length of a side of the patio

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)