Question

Given that h(x) = 3x −19, find the value of x that makes h(x) = 71.

Answer 1

Keywords:

Equation, variable, value, clear

For this case we have an equation with a variable of the form $y = h (x)$. Where $h (x) = 3x-19$. Given the value of$h (x) = 71$, we want to find the value of the variable "x". So, we have:

$h (x) = 3x-19\\71 = 3x-19$

We must clear "x", for this, we add "19" to both sides of the equation:

$71 + 19 = 3x-19 + 19\\90 = 3x$

We divide between "3" on both sides of the equation:

$\frac {90} {3} = \frac {3x} {3}\\30 = x$

Thus, the value of the variable "x" is 30.

Answer:

$x = 30$

Option A

Answer 2

Answer:

The answer is a. 30.

Step-by-step explanation:

3 times 30 is 90 and 90-19 equals 71.