Write the phrase as algebraic expression using symbols.

Thrice the number $x$ increased by $y$.

Write the phrase as algebraic expression using symbols.

$5$ times the number $n$ minus four.

Write the phrase as algebraic expression using symbols.

$25$ decreased by $4$ times $q$

Write the phrase as algebraic expression using symbols.

$6$ times $a$ less than the quotient of $b$ by $4$ is $\frac{b}{2k}-3k\left(a\right)$. Then find the value of $k$

If the phrase, the square of the sum of $a$ and $b$  can be written as algebraic expression using symbols is ${\left(a+b\right)}^k$, then find the value of $k$

Rahul has $300$ watches. He sells $w$ watches everyday. Which of the following expression shows the number of watches left with him after $n$ weeks?

A number pattern is given by the rule: $T=2n+1$, where $T$ is the term in the number pattern, and $n$ is the number of the term. Write down the first $6$ terms of the pattern.

A number pattern is given by the rule: $T=2n+1$, where $T$ is the term in the number pattern, and $n$ is the number of the term. Write down the $1000$th  term of the pattern.

A number pattern is given by the rule $T=20n-9$. Find the first $4$ terms.