Write and solve an inequality.
Chris earns $7.00 per hour working on the weekends. He needs at least $210.00 for a new cell phone. How many hours, h, does Chris need to work on the weekends to buy a new phone?
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To solve this inequality problem, we can set up an equation using the information given.
The amount of money Chris earns is $7.00 per hour, and he needs at least $210.00 for a new cell phone. We can represent the number of hours Chris needs to work as "h".
So the equation becomes:
7h ≥ 210
To solve for h, we need to isolate the variable h. To do this, we divide both sides of the inequality by 7:
7h/7 ≥ 210/7
This simplifies to:
h ≥ 30
Therefore, Chris needs to work at least 30 hours on the weekends to buy a new cell phone.