Write the expression as the sine or cosine of an angle: sin π/7 cos x + cos π/7 sin x

Hint: sin(A +- B) = sin A cos B +- cos A sin B
cos (A +- B) = cos A cos B -+ sin A sin B

What is the base of 1/9 to the power of 2

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?