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Scilla [17]
3 years ago
5

Plants are sold in three different sizes of tray. A small tray of 30 plants costs £6.50. A medium tray of 40 plants costs £8.95.

A large tray of 50 plants costs £10.99. Kaz wants to buy the tray of plants that is the best value for money. Which size of tray of plants should she buy? You must show all your working out.
Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
3 0

Answer:

Due to the lower cost per plant, she should buy the small tray of plants.

Step-by-step explanation:

Finding the best value for money:

To find the best value for money, we find the price of each plant, dividing the cost by the number of plants.

Small tray:

30 plants costs 6.50.

6.50/30 = 0.2167

Each plant costs £0.2167

Medium tray:

40 plants costs 8.95.

8.95/40 = 0.22375

Each plant costs £0.22375

Large tray:

50 plants costs 10.99

10.99/50 = 0.2198

Each plant costs £0.2198

Due to the lower cost per plant, she should buy the small tray of plants.

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stealth61 [152]

The notation just means

(f/g)(-4) = f(-4) / g(-4)

If f(x) = x² + 2 and g(x) = 1 - 3x, then

f(-4) = (-4)² + 2 = 16 + 2 = 18

g(-4) = 1 - 3 (-4) = 1 + 12 = 13

and so

(f/g)(-4) = 18/13

8 0
2 years ago
How to make a graph of an exponential function that shows exponential decay and has a y intercept of 2
Sliva [168]

Answer:

f(x)=2e^{-kx}

in a graph the x value at the y intercept is 0

f(x)=Ae^{-kx}  is a typical decay function

if x = 0  thus e^{-kx} = 1

so at 0 the function value would be A

f(x)=2e^{-kx}

Step-by-step explanation:

6 0
3 years ago
Consider the line 5x-8y=8 what is the slope of a line perpendicular to this line what is the slope of a line parallel to this li
Sophie [7]

\text{Let}\ k:y=m_1x+b_1\ \text{and}\ l:y=m_2x+b_2,\ \text{then}\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\l\ \parallel\ k\iff m_1=m_2\\\\\text{Convert the equation to the slope-intercept form}\ y=mx+b.\\\\5x-8y=8\qquad\text{subtract}\ 5x\ \text{from both sides}\\\\-8y=-5x+8\qquad\text{divide both sides by (-8)}\\\\y=\dfrac{5}{8}x-1\to m_1=\dfrac{5}{8}\\\\perpendicular:\ m_2=-\dfrac{1}{\frac{5}{8}}=-\dfrac{8}{5}\\\\parallel:\ m_2=\dfrac{5}{8}

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3 years ago
I need the answer ASAP
bixtya [17]

Answer:

I WISH I COULD HELP BUT I CANT SORRY

Step-by-step explanation:

I CANT HELP IM NOT IN YOUR GRADE I'm in middle School

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3 years ago
Penny received an unexpected $5,000.00 gift from a distant relative. She invests it
leva [86]

Answer:

$9,000.00 is her original investment worth in 10 yrs.

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Then subtract -500000 = 5794.62498636

Step-by-step explanation:

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3 years ago
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