A restaurant buys 9 pounds of truffles. Suppose truffles cost $168 per ounce. How much would the restaurant pay for the truffles?

If you answer 2+2 you will get over 80 points

A50-foot ladder is leaning against a vertical wall. if the base of the ladder is 45 feet from the base of the wall, find the angle the bottling of the ladder makes with the ground.

One file clerk can file 10 folders per minute. a second file clerk can file 11 folders per minute. how many minutes would the two clerks together take to file 672 folders?