how many machines will be needed to complete a task in 8 days, given that 4 machine can complete the same task in 12 days

(40 points) i need some . an answer definition is appreciated as well.

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.

43lbs of tomatos cost $387. how much would 41lbs cost