G
#13 i
You put a barrier around the garden and cover it with a layer of mulch. The
barrier costs $0.75 per foot. One bag of mulch covers 7 square feet and costs
$5. How much do you spend?
8 ft
2 ft
2 ft
3 ft
5 ft
5 ft

G 13 i You put a barrier around the garden and cover it with a layer of mulch The barrier costs 075 per foot One bag of mulch covers 7 square feet and costs 5 H class=

Respuesta :

The unit cost of the fencing and the cost of a bag of mulch together with

the area and perimeter of the garden give a cost sum of $36.5.

Response:

  • The amount required to spend is $36.5

How does the unit cost determine the total cost?

Cost of the barrier per feet (unit cost) = $0.75

Area covered by one bag of mulch = 7 square feet

Cost of one bag of mulch (unit cost) = $5

From the given diagram, we have;

Area of the garden = 8 ft. × 2 ft. + 0.5 × 8 ft. × 3 ft. = 28 ft.²

[tex]Number \ of \ bags \ of \ mulch \ required = \dfrac{28 \, ft.^2}{7 \, ft.^2/ bag} = \mathbf{ 4 \, bags}[/tex]

Length of fencing = 2 ft. + 8 ft. + 2 ft. + 5 ft. 5 ft. = 22 ft.

  • Amount to spend = 4 bags × $5 + 22 ft. × $0.75 = $36.5

Learn more about unit cost here:

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