The total cost of 15 gallons of regular unleaded gasoline and 10 gallons of premium unleaded gasoline is $35.50. premium unleaded costs $0.20 more per gallon than regular unleaded. what is the cost per gallon of each type?

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?

Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively

An angle that measures between 90 and 180° is called a(,