How much money must be deposited to earn $200.00 in simple interest in 6 months at an annual rate of 5.5%?

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).