Evaluating Algebraic Expressions by assigning Value to the Variable

Q. Find the value of the expression $x^2$ for the given values of $x:$
$x=1,5,-6,\frac{3}{7}$

1. $1,25,36,\frac{9}{49}$
2. $1,15,36,\frac{9}{49}$
3. $1,15,16,\frac{9}{49}$
4. $1,25,36,\frac{13}{49}$

Q. Evaluate the expression $4x+1$ for $x=\frac{1}{4}.$

1. $1$
2. $2$
3. $3$
4. None of the above

Q. Find the value of the expression $-4x$ for the given values of $x:$
$x=1,5,-6,\frac{3}{7}$

1. $4,20,-24,\frac{12}{7}$
2. $4,20,24,\frac{-12}{7}$
3. $-4,-20,24,\frac{12}{7}$
4. $-4,-20,24,\frac{-12}{7}$

Q. Evaluate the expression $\frac{5x+15}{10}+\frac{4x+3}{5}$ for $x=3.$

Q. Find the value of the expression $3x-1$ for the given values of $x:$
$x=1,5,-6,\frac{3}{7}$

1. $2,14,-19,\frac{2}{7}$
2. $2,14,19,\frac{2}{7}$
3. $2,14,29,\frac{2}{7}$
4. $2,14,39,\frac{2}{7}$

Q. The formula $3n+2$ can be used to calculate the total cost of bowling in dollars, where "$n$" is the number of games bowled and $2$ is the cost of shoe rental. How much is it going to cost Alex to bowl $4$ games? $

Q. Find the value of the expression $2x$ for the given values of $x:$
$x=1,5,-6,\frac{3}{7}$

1. $2,8,-12,\frac{6}{7}$
2. $2,10,-12,\frac{6}{7}$
3. $2,10,-12,\frac{6}{14}$
4. $2,10,-12,\frac{3}{7}$

Q. Find the value of the expression $x$ for the given values of $x:$
$x=1,5,-6,\frac{3}{7}$

1. $1,5,-6,\frac{3}{7}$
2. $1,4,-6,\frac{3}{7}$
3. $1,5,6,\frac{3}{7}$
4. $2,5,-6,\frac{3}{7}$

Q. The value of $x+y+z=50$. If $x=5$ and $y=15$, then find the value of $z$.

1. 30
2. 20
3. 25

Q. What is the area of the above-depicted rectangular park? If $x=3;y=2.$

1. $90$ unit${}^2$
2. $75$ unit${}^2$
3. $45$ unit${}^2$
4. None of the above