The population of raccoons has been increasing in the Bayside area. The equation R(x)= 100(1.2)^x can be

1 answer:

7 0

A) 100 is the initial raccoon population. 1.2 is the rate of growth (growing 20% every month)

b) 100 * (1.2)^6

≈ 298 raccoons

c) 1540 = 100 * (1.2)^x

Divide by 100

15.4 = 1.2^x

x = log(15.4)/log(1.2)

≈ 15 months

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Christopher is going to install wallpaper on the four walls of his room. Two of the walls are 14 feet long by 9 feet high. The o

Aliun [14]

Given:
2 walls - 14ft by 9ft
2 walls - 20ft by 9ft

Wall 1 & 2 = 14ft * 9ft = 126 ft² x 2 = 252 ft²
Wall 3 & 4 = 20ft * 9ft = 180 ft² x 2 = 360 ft²

Total area = 252 ft² + 360 ft² = 612 ft²

Cost of 1 single roll: $20
612 ft² ÷ 18 ft² = 34 rolls * $20 = $680

Cost of double roll: $40
612 ft² ÷ 54 ft² = 11.33 rolls ⇒ 12 double rolls
12 * $40 = $480

If Christopher opts for 1 single roll of wallpaper, he'll spend $680.
If he opts for double roll of wallpaper, he'll spend $480.

Double roll of wallpaper is the cheaper option. He'll save $200 if he'll buy the double roll of wallpaper.

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2 years ago

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Lena has 32 pens. 3/4 of the pens are blue. How many blue pens does Lena have?

melomori [17]

Answer:

24 pens are blue

Step-by-step explanation:

32 pens in total and 3/4 of it are blue.

32 ÷ 4 = 8

8 × 3 = 24

24 of the 32 pens are blue pens