Jean's bedroom is 13 feet by 11 feet. She has chosen a carpet which costs \( \$ 31.40 \) per square yard. This includes installation. Determine her cost to carpet her room.

Déduire que \( \overrightarrow{C^{\prime} D^{\prime}}=\overrightarrow{A^{\prime} \vec{E}^{\prime}} \)

Assume the following: \( \bar{x}=42 \) s=6 \( n=25 \) Calculate confidence intervals for a \( 95 \% \) confidence level. Calculate confidence intervals for a \( 99 \% \) confidence level.

d) \( f(x)=\frac{3 x-1}{x+2} \)

Find the product of the following two matrices. \[ \left[\begin{array}{cc}-2 & 2 \\ 1 & 1\end{array}\right]\left[\begin{array}{cc}-2 & 4 \\ -1 & 1\end{array}\right] \]

7. What the number that measures an object's resistance to being deformed elastically when stress is applied to it? a) Elastic modulus b) Plastic modulus c) Poisson's ratio d) Stress modulus 8. The law which states that within elastic limits strain produced is proportional the stress producing it is known as a) Bernoulli's law b) Hooke's law d) Poisson's law 9. What is Hooke's law? b) The relation between normal stress and corresponding strain b) The relation between shear stress and corresponding strain d) None of the mentioned.