Give an expression for the following:

$13$ more than $9$ times a number $p$.

Give a statement for the following expression: $y-2$

Give a statement for the following expression: $2x+3$

Is the following equation with a variable? In case of the equation with a variable, identify the variable.

$7\times 9 = 63$

Is the following equation with a variable? In case of the equation with a variable, identify the variable.

$6 p<72$

Is the following equation with a variable? In case of the equation with a variable, identify the variable.

$x+8=70$

A train travels at an average speed of $x$ km per hour. It is going from Delhi to Chandigarh. After travelling for $3$ hours, Chandigarh is still $40$ km away. Express the distance from Delhi to Chandigarh in terms of $x$. Find the distance covered at speed

$15 \mathrm{km}/\mathrm{hr}$ 

A train travels at an average speed of $x$ km per hour. It is going from Delhi to Chandigarh. After travelling for $3$ hours, Chandigarh is still $40$ km away. Express the distance from Delhi to Chandigarh in terms of $x$. Find the distance covered at speed

$23 \mathrm{km}/\mathrm{hr}$