my dinner table is 3m long and 1.5m wide. i want to put festive ribbon all around the outside. what length of ribbon should i buy in metres

Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year? f(n+1)=f(n)+5

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?

Which has the greater energy, light of wavelength 519 nm or light with a frequency of 5.42 x 10^8 sec^-1?