Nadia is painting the four sides of a rectangular trough. if a can paint will cover 20ft^2, how many cans will she need to buy to complete the job?

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?

The solution set for 5v2 – 125 = 0 is

Can someone check if i did this correct. it’s number 4 if you’re wondering.