Which pair of equations generates graphs with the same vertex? y = –(x + 4)2 and y = (x – 4)2 y = –4x2 and y = 4x2 y = –x2 – 4 and y = x2 + 4 y = (x – 4)2 and y = x2 + 4

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?

Percent increase and decrease. original number: 45 new number: 18

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points