How much will my total cost be if I pay 5% sales tax on a subtotal of 28.95?

Under normal conditions, 1.5 feet of snow will melt into 2 inches of water. during a winter season high in the mountains, 301 feet of snow fell. how many inches of water will there be when the snow melts?

Find the maximum value of p= 4x + 5y subject to the following constraints :

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.