How do I write the mathematical expression for this question?

"The value of a certain rare silver dollar was $60,000 in 1980. A price history of the silver dollar shows that it has been doubling in value every 30 years. Find an exponential growth model for A, the value of the coin (in dollars) t years after 1980. (Enter a mathematical expression.)

A =

Use your model to estimate the value (in dollars) of the coin in 2035. (Enter a number. Round to the nearest thousand dollars.)

$

Jenny invests $2,000 at an interest rate of 5%. the amount of money, me, in jenny's account after tyears can be represented using the equation ma-2000(1.05). if jenny would have invested the same amount of money at the same interest rate four years ago, the equation representing the amount of money mo. in her account would be represented using the equation! mg = 2000(105)*** which of the following is equivalent to mp? 2000(105) om- 1.05 2000(1.05) mo 1059 mp-2000(1.05) (105) mp - 2000(1.05) + (1.05)