evaluate the expression below at t=4 p=$400 and r=-9% round youre answer 2 decimal place
There is no "expression below" to evaluate. The subject is also not trigonometry
To evaluate the expression at t=4, p=$400, and r=-9%, we can use the formula for compound interest:
A = P * (1 + r)^t
where:
A = the final amount
P = the principal amount
r = interest rate
t = time in years
Substituting the given values into the formula, we have:
A = 400 * (1 - 0.09)^4
Simplifying this expression:
A = 400 * 0.91^4
Calculating:
A ≈ 400 * 0.683
A ≈ 273.20
Rounding to 2 decimal places, the result is approximately $273.20
To evaluate the expression, we need to substitute the given values into the expression and perform the calculations.
The expression is not provided, but assuming the expression is related to interest or growth, we can use the compound interest formula as an example:
A = P(1 + r)^t
Where:
A is the final amount
P is the principal amount
r is the interest rate
t is the time
Substituting the given values:
P = $400
r = -9% = -0.09 (expressed as decimal)
t = 4
Now we can evaluate the expression:
A = 400(1 - 0.09)^4
To raise (1 - 0.09) to the power of 4, we can use a calculator or perform the calculation step by step:
(1 - 0.09)^4 = 0.91^4
Calculating 0.91^4 gives us approximately 0.6643.
Now we can substitute this value back into the expression:
A = 400 * 0.6643
Calculating 400 * 0.6643, we get approximately 265.72.
Rounded to two decimal places, the result is $265.72.