Answer:
6
Step-by-step explanation:
first you do -3+6 which is 3.
then, u do -3+5 which is 2
multiply it and u get 6
First step is parentheses so subtract 1/4 from 1
(1-1/4) = (4/4 - 1/4) = (3/4)
After parentheses we perform exponent operations
(3/4)^2 = (3^2/4^2) = (9/16)
Finally, after exponent operations we perform multiplications
(1/3)*(9/16) = (3/16)
DT/dt=k(T-38)
ln(T-38) = kt+C
T=38 + Ce^(-kt)
Since T(0)=75, 75 = 38+C, so C=37
Since T(30)=60, 60 = 38+37e^(-30k), so k = -ln(22/37)/30 ~= -0.017329
T(60) = 38+37e^(-0.017329*60) = 51.1°F
