How much interest would Donovan earn on a $250 principal over 6 months with an interest rate of 3.5% per year? How money will he have in total after 6 months?
Find the simple interest for $600 invested at 5% per year for 4 years.
What would be the total amount of money after 4 years?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters .

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons