Is anyone able to help me with this problem? the first photo is an example the second pic is the problem Im having trouble with Thank you!

Write the equations in logarithmic form 10^3=1,000

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

(25 ! ) what does it mean for an equation to have no solution or infinitely many solutions?