Solve: cos(x + pi)=1/2 over the interval [pi/2, pi].

2a+7+4ahow many terms? how many variables? any like terms? yes noif yes, which ones? what are the coefficients? any constants? yes noif yes, which ones? simplify the expression by combining like terms and constants: how many terms now?

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

What is the radical expression that is equivalent to the expression 27 1 over 5?