4. Two almirahs are purchased for \( 27,800 . ₹ 200 \) was spent on the transportation. One of them is sold at a profit of \( 40 \% \) and the other one at a loss of \( 40 \% \). If the selling price was same in both the cases, find the cost price of each alminh?

\( 4(x-5)=8 \) Solve the equation above for \( x \). Which of the following is the correct answer? \( 3 / 4 \) 7

If \( x \) represents the width of a rectangle and the length is four less than three times the width, which of the following expressions represents the length of the rectangle in terms of \( x \) ? \( 3 x-4 \) \( 4-3 x \) \( 4 x-3 \)

Resuelve la ecuación exponencial: \( 2^{x} = 16 \)

Solve the equation above for x . Which of the following is the correct answer? -3 \( 3 / 4 / 4 \) 7

5. Résoudre l'équation \( 25 x^{2}-81=0 \)