Mary compro un pantalon de 72 soles y una casaca en 35 soles mas que el pantalon si paga con billete de 200 soles ¿ cuanto recibio de vuelto?

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities

The angle of elevation from point a to the top of the cliff is 38 degrees. if point a is 80 feet from the base of the cliff , how high is the cliff ?