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Biblioteka

Open Up - Grade 8 - Mathematics - Unit 5 - Lesson 1

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"Source: Open Up Resouces (Download for free at openupresources.org.)"

Pitanje 1
1.

Given the rule:

Complete the table for the function rule for the following input values:

Pitanje 2
2.

Here is an input-output rule:

Complete the table for the input-output rule:

Pitanje 3
3.

Andre’s school orders some new supplies for the chemistry lab. The online store shows a pack of 10 test tubes costs $4 less than a set of nested beakers. In order to fully equip the lab, the school orders 12 sets of beakers and 8 packs of test tubes.

Write an equation that shows the cost of a pack of test tubes, , in terms of the cost of a set of beakers, b.

Pitanje 4
4.

Andre’s school orders some new supplies for the chemistry lab. The online store shows a pack of 10 test tubes costs $4 less than a set of nested beakers. In order to fully equip the lab, the school orders 12 sets of beakers and 8 packs of test tubes.

The school office receives a bill for the supplies in the amount of $348. Write an equation with t and b that describes this situation.

Pitanje 5
5.

Andre’s school orders some new supplies for the chemistry lab. The online store shows a pack of 10 test tubes costs $4 less than a set of nested beakers. In order to fully equip the lab, the school orders 12 sets of beakers and 8 packs of test tubes.

Since t is in terms of b from the first equation, this expression can be substituted into the second equation where t appears. Write an equation that shows this substitution.

Pitanje 6
6.

Andre’s school orders some new supplies for the chemistry lab. The online store shows a pack of 10 test tubes costs $4 less than a set of nested beakers. In order to fully equip the lab, the school orders 12 sets of beakers and 8 packs of test tubes.

Solve the equation for b.

Pitanje 7
7.

Andre’s school orders some new supplies for the chemistry lab. The online store shows a pack of 10 test tubes costs $4 less than a set of nested beakers. In order to fully equip the lab, the school orders 12 sets of beakers and 8 packs of test tubes.

How much did the school pay for a set of beakers? For a pack of test tubes?

Pitanje 8
8.

Pitanje 9
9.

Pitanje 10
10.

For what value of x do the expressions 2+3 and 3x-6 have the same value?