Question

mary practiced piano for two or more hours each week write and solve an inequality to represent how many hours mary practiced the piano in 4 weeks

Answer 1

Therefore the inequality that represents her practice in four weeks is:
`\text{four week practice} \geq 8`

Explanation:

Mary practiced the piano for two or more each week, in other words the number of hours practiced in a week must be equal or greater than 2. A math expression that can represent this situation can be seen below:

`\text{week practice} \geq 2`

The problem wants us to write an inequality to state how many hours she practiced in four weeks. In order to do this, we need to multiply the number of hours she practiced in a week, given by the last expression, by four. We have:

`\text{four week practice} \geq 4*2\\\text{four week practice} \geq 8`

Therefore the inequality that represents her practice in four weeks is:
`\text{four week practice} \geq 8`