3.2 Rhino poaching is a serious problem and has resulted in the black (4) Rhino becoming an endangered species. Statistics show that there were 60000 black Rhinos in 1970 and only 4200 remained in 2011. Determine the annual rate of population decrease as a percentage over these 42years, if the rate is compound decay.

Find the amount of simple interest earned for depositing the given principle in an account. if \( \$ 7200 \) is invested at \( 3 \% \) for 3 months Simple interest: \( \$ \) Question Help: Chessage instructor Check Answer

\( \int e^{\sqrt{x}} d x=\frac{e^{\sqrt{x}}}{2 \sqrt{x}}+C \) Select one: True False

Evaluate the following integral \( \int e^{x} \cos 5 x d x \)

\begin{tabular}{|l|}\hline Question 3 \\ Among adult humans with 47 chromosomes (one extra compared to the typical number), it is \\ more likely for the extra chromosome to be a sex chromosome \( (X \) or \( Y \) ) than an autosome. \\ True \\ False \end{tabular}

2) Resuelve las siguientes ecuaciones cuadráticas: a) \( x^{2}+8 x+7=0 \) b) \( 4 x^{2}-17 x+4=0 \) 3) Resuelve las siguientes ecuaciones cuadratica a) \( (3 x-2)(x+5)=(x+2)(x+1) \) b) \( (x+4)^{2}+(x-3)^{2}=(x-1)^{2}+36 \)