Sean earns 6.70 per hour working after school.He needs at least $155 to buy a new video game.Write an inequality that describes how many hours he must work to reach his goal?

Respuesta :

Answer:

The inequality representing how many hours he should work in order to reach his goal would be

[tex]x\geq 23.14[/tex]

where [tex]x[/tex] represents the number of hours Sean works.

Step-by-step explanation:

Hourly earnings of Sean from after school job = $6.70

Let Sean work for [tex]x[/tex] hours in order to earn at least $155.

We will use unitary method to find earning for [tex]x[/tex] hours.

If 1 hour earnings = $6.70

∴ in [tex]x[/tex] hours earnings in dollars would be =  [tex]6.70\times x=6.7x[/tex]

Now, we know Sean needs at least $155 to buy a new video game.

This means his earnings working  [tex]x[/tex] hours must be at least $155.

Thus, the inequality representing how many hours he should work in order to reach his goal would be

[tex]6.7x\geq 155[/tex]

Dividing both sides by 6.7.

[tex]\frac{6.7x}{6.7}\geq \frac{155}{6.7}[/tex]

[tex]x\geq 23.14[/tex]   (Answer)

Thus, Sean should work a minimum of 23.14 hours to earn at least $155.