Simplify Negative two and one-third minus negative ten and one-sixth

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?

Find the x-intercepts for the parabola defined by this equation: y=-3x^2-6x+9

Find the exact value of cos(arcsin( one fourth for full credit, explain your reasoning. (2 points)