An empty flowerpot has a mass of 800g. The mass of the flowerpot increases to 4kg when filled with soil

A different flowerpot is 25% lighter but holds 40% more soil
Calculate the mass of this flowerpot when it is full of soil.

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

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

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1