Solve simultaneous equation x-y=4 and x²+y²=10​

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?

Why is x= 4 a solution to the proportion 14/x 56/1 6

Which unit rate is the lowest price per ounce? (5 points) choice a: 6 ounces of chocolate chips for $2.49 choice b: 8 ounces of chocolate chips for $3.32