11) \( (2,4),(1,-3) \)

\( \frac { 1 } { 10 } , 10 ^ { 3 } \cdot 5 \cdot 2 , \frac { 1 } { 10 ^ { 3 } } , 10 ^ { 3 } + 10 ^ { 2 } \)

7- The expression \( \left(6 x^{2}\right)\left(3 x^{7}\right) \) is equivalent to \( b x^{9} \), where \( b \) is a constant. What is the value of \( b \) ?

\( P=\{x \mid 10

e) A machine gunfires bullets of mass 10 g at speed of \( 12 \mathrm{kms}^{-1} \). If the-gunner can exert an average force of up to 80 N against the gun, calculate the maximum number of bullets tha the can fire per minute. Sketch a force-time graph of the recoil force of the gun on the shoulder of the gunner, and show, graphically, what is understood by the average force.

\( = 8 ^ { 3 } + \overline { ( 8 ^ { 2 } \times 5 ) } + \overline { ( 8 ^ { 2 } \times 5 ) } + \overline { ( 8 ^ { 2 } \times 5 ) } + ( \overline { 8 \times 5 ^ { 2 } } ) + ( 8 \times 5 ^ { 2 } ) + ( 8 \times 5 ^ { 2 } ) + 5 \)