When you reverse the digits in a certain two-digit number you increase its value by 18. find the number if the sum of its digits is 6

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?

What is sin 7x/4 ? i need on this urgent trig

What is the y-intercept of the line given by the equation