Belinda has four hundred R5 coins saved in her piggy bank at the beginning of the winter holiday. She wants to have at least 120 R5 coins in her piggy bank by the end of the holiday. She opens the piggy bank and takes out 56 R5 coins each week for entertainment purposes. For how many weeks ( \( k \) ) can she take R5 coins from her piggy bank? Choose an inequality that represents Belinda's situation.

7. Find all values of \( c \) such that the following function is continuous at \( x=c \) \[ f(x)=\left\{\begin{array}{ll}8-c x, & x \leq c \\ x^{2}, & x>c\end{array}\right. \]

If length and breadth of rectangles are \( (2 x-3 y) \) and \( (4 x+3 y) \) then. Find the area. of rectangle If \( x=3, y \) ar \( =2 \) then find actual ares of

Zalikha has 8 kg of sugar she has used \( \frac{1}{4} \) of the sugar to make a cake and \( \mathrm{I} \frac{2}{5} \mathrm{~kg} \) of the remaining sugar to make doughnuts. Calculate the mass. in kg . of the sugar left

Решите неравенство: \( \log _{2}^{2} x+6>5 \log _{2} x \)

\( \vec { x } ( x , y , z ) = A ( x y ^ { 2 } \hat { i } + y ^ { 3 } \hat { j } - 4 y ^ { 2 } z \hat { k } \)