) The formula for the amount of money in an account after int arned is A = P + Prt, where A is the amount in the account, P is the interest rate and t is time in years that the money has be Solve the equation for P. ) Suppose that the amount in an account 3 years after being i 6050. What was the principal amount 3 years ago?
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Equations and inequalities describe the relationship between two mathematical expressions.
Linear Functions
A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
The formula for the amount of money in an account after interest has been
earned is A = P + Prt, where A is the amount in the account, P is the principal, r
is the interest rate and t is time in years that the money has been invested.
a) Solve the equation for P.
b) Suppose that the amount in an account 3 years after being invested at 7% is
$6050. What was the principal amount 3 years ago?
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