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Laabri

Open Up - Grade 7 - Mathematics - Unit 7 - Lesson 16

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

Asemmisa {{asɛmmisaAhyɛnsode}}
1.

A landscape architect is designing a pool that has this top view:

How much water will be needed to fill this pool 4 feet deep?

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

A landscape architect is designing a pool that has this top view:

Before filling up the pool, it gets lined with a plastic liner. How much liner is needed for this pool?

Asemmisa {{asɛmmisaAhyɛnsode}}
3.

A landscape architect is designing a pool that has this top view:

Here are the prices for different amounts of plastic liner. How much will all the plastic liner for the pool cost?

(Round to the nearest cent)

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

Shade in a base of the trapezoidal prism. (Be careful! The base is not the same as the bottom.)(Show Your Work)

Find the area of the base you shaded.(Short Answer)

Asemmisa {{asɛmmisaAhyɛnsode}}
5.

Use the picture of the prisim to solve the problem.

Find the volume of this trapezoidal prism.(Short Answer)

Asemmisa {{asɛmmisaAhyɛnsode}}
6.

For each diagram, decide if y is an increase or a decrease of x.

Then determine the percentage that x increased or decreased to result in y.(Round to the nearest whole percent.)

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

For each diagram, decide if y is an increase or a decrease of x.

Then determine the percentage that x increased or decreased to result in y.(Round to the nearest whole percent.)

Asemmisa {{asɛmmisaAhyɛnsode}}
8.

For each diagram, decide if y is an increase or a decrease of x.

Then determine the percentage that x increased or decreased to result in y.(Round to the nearest whole percent.)

Asemmisa {{asɛmmisaAhyɛnsode}}
9.

For each diagram, decide if y is an increase or a decrease of x.

Then determine the percentage that x increased or decreased to result in y.(Round to the nearest whole percent.)

Asemmisa {{asɛmmisaAhyɛnsode}}
10.

Noah is visiting his aunt in Texas. He wants to buy a belt buckle whose price is $25. He knows that the sales tax in Texas is 6.25%.

How much will the tax be on the belt buckle?(round to the nearest cent)

Asemmisa {{asɛmmisaAhyɛnsode}}
11.

Noah is visiting his aunt in Texas. He wants to buy a belt buckle whose price is $25. He knows that the sales tax in Texas is 6.25%.

How much will Noah spend for the belt buckle including the tax?(round to the nearest cent)

Asemmisa {{asɛmmisaAhyɛnsode}}
12.

Noah is visiting his aunt in Texas. He wants to buy a belt buckle whose price is $25. He knows that the sales tax in Texas is 6.25%.

Write an equation that represents the total cost, c, of an item whose price is p.