Dakota earned $7.50 in interest in Account A and $18.75 in interest in Account B after 15 months. If the simple interest rate is 4% for Account A and 5% for Account B, which account has the greater
principal? Explain.
Which account has the greater principal?

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

How many terms does the polynomial x^2 y^2 have