Write 7 x 100 + 6 x 10 + 9 x (1/10) + 3 x (1/100) in standard form

Three times the sum of a number and seven is negative thirty-six. what is the number?

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

For g(x) = 5x - 3 and h(x) = [tex]\sqrt{x}[/tex], find (g · h)(4)