Consider a 30 year house loan for $130,000 at 4.3% simple interest with no money down. If payments over the 30 years are $643.33 per month, how much money will the house actually cost? please help

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)