The charge C of a telephone company is partly constant and partly varies as the
number of units of call u. The cost of 50
units is N2 500 and the cost of 120 units
is N3000. Find:
a) the formula connecting C and u.​

Margaret is purchasing a house for $210,000 with a 15 year fixed rate mortgage at 4.75% interest she has made a 5% down payment the house is valued at 205,000 and the local tax rate is 3.5% homeowners insurance 600 per year what are her total monthly payment