In this expression, , which are the coefficients?

When 3 is subtracted from twice a certain number, the result is the same as adding 3 to the number. What is this number?

The multiplicative identity of real numbers is _____.  

Which of the following numbers is NOT a factor of 15?

The set of numbers {0, 1, 2, 3, ...} is called ______.

Match the terms in column B with a statement in column A

Thabo wants to buy wireless Bluetooth earphones which costs R900. He is impatient and does not want to wait and save the money to buy himself the earphones. He applies for a bank loan. The bank approves the loan and gives Thabo four (4) years to amortise the loan. The bank charges an interest rate of 6% compounded yearly for the loan. Find the yearly instalment that Thabo has to pay to the bank.

Frank needs to pay R60 000,00 towards his son’s university fees in three years’ time. If he has R47 150,30 now, at what interest rate per year compounded monthly, must he invest his money? 

Gloria bought a house for R1 800 000. She managed to secure a loan at an interest rate of 7,5% per year, compounded every four months, for a period of 30 years. If the periodic payments are R50 468,56. Determine the outstanding balance at the end of 20 years.

Kgomotso bought a townhouse for R1 495 000. She managed to secure a loan at an interest rate of 11,35% per year, compounded every six months, for a period of 20 years. Determine the period payments Kgomotso must make.