S K Gupta and Anubhuti Gangal Solutions for Exercise 1: Exercise

Write the phrase as algebraic expression using symbols.

$7$ more than $4$ times $r$.

Write the phrase as algebraic expression using symbols.

$4$ times the sum of $y$ and $7$.

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?