What's the annual interest for a principle of $3500 at a simple annual interest rate of 2.3%

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Given abc find the values of x and y. in your final answer, include all of your calculations.