Homework Help: Algebra

Posted by Kimmie on Thursday, December 23, 2010 at 5:44pm.

For the first phase of the project, imagine you want to cover the backyard with decorative rock and plant some trees. You need 30 tons of rock to cover the area. If each ton costs $60 and each tree is $84, what is the maximum number of trees you can buy with a budget of $2,500? Write an inequality that illustrates the problem and solve. Express your answer as an inequality and explain how you arrived at your answer.

Would 5 be a solution to the inequality? Justify your answer.

Algebra - drwls, Thursday, December 23, 2010 at 8:45pm
Five is not the answer.

You need to spend 30x60 = $1800 on rocks. That leaves you with $700 for trees.
The maximum number of trees you can buy is the largest integer x that satsifies
84 x <or= 1500

x = 17
Algebra - Ms. Sue, Thursday, December 23, 2010 at 8:49pm
What is wrong with my math?

700 / 84 = 8.33
Algebra - drwls, Friday, December 24, 2010 at 1:44am
Ms Sue is right. I don't know where the 1500 number came from. My mind was wandering

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