Evaluate 16a−b when a=12 and b=7.

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?