Write the algebraic expressions for the following situations.

The speed of a bus is $z \mathrm{m}/\mathrm{s}$. Write its speed in $\mathrm{km}/\mathrm{h}$

Write the algebraic expressions for the following situations.

A pair of shoes cost $₹x$. The cost of a dress is $₹200$ more than $5$ times the cost of the shoes.

Tick $\left(✓\right)$ the correct option. 

In a polynomial, the exponents of the variables are always

Tick $\left(✓\right)$ the correct option.

Which of the following is a binomial?

Add the following monomials:

$8xy, 2xy, 9xy$

Add the following monomials:

$6a, 5a, -3a, -3a$

Adding the monomials $5x^2 \& 2x$, we get $5x^2+Kx$.

Write the value of $K$.

Add the following monomials:

$-40mn, -30mn, 18mn$

Addition of monomials $6x^3, -4x^2, 5x^3, 7x^2, 8$ gives $a{x}^b+b{x}^c+8$. Find $a+b+c$.