Express 55 miles per hour in kilometers per hour?

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

What other information do you need to prove triangle dac=bca by asa