What is the value of y when the value of x is 1?

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

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

Stacey filled her 1/2 cup of measuring cup seven times to have enough flour for a cake recipe how much flour does the cake recipe calls for