Avery deposited 1250 in a new savings account. Which amount is closest to the balance of the account at the end of three years

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

With alll of except for the 2 that i did already

The box plots show the average speeds, in miles per hour, for the race cars in two different races. which correctly describes the consistency of the speeds of the cars in the two races?