Write the solution set using interval notation.
- 5(4 x-1)20
A) $\left[ \frac { 21 } { 20 } , \infty \right)$
B) $\left( \frac { 5 } { 4 } , \infty \right)$
C) $\left( \frac { 3 } { 4 } , \infty \right)$
D) $\left[ \frac { 19 } { 20 } , \infty \right)$

Question

Write the solution set using interval notation.
- 5(4 x-1)>20 
A) $\left[ \frac { 21 } { 20 } , \infty \right)$
B) $\left( \frac { 5 } { 4 } , \infty \right)$
C) $\left( \frac { 3 } { 4 } , \infty \right)$
D) $\left[ \frac { 19 } { 20 } , \infty \right)$

Quizplus · Accepted Answer

First, solve the inequality: $5(4x - 1) > 20$ simplifies to $20x - 5 > 20$, which further simplifies to $20x > 25$, and finally $x > \frac{5}{4}$. Thus, the solution set in interval notation is $\left(\frac{5}{4}, \infty\right)$.

Write the Solution Set Using Interval Notation [2120,∞)\left[ \frac { 21 } { 20 } , \infty \right)[2021​,∞)

Write the Solution Set Using Interval Notation $\left[ \frac { 21 } { 20 } , \infty \right)$