If a -1 = 3, what is the value of a?

Find the missing factor. 7s2 + 25s + 12 = (s + 3)( ).

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

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.