Answer:
$1.25
September
$30
Step-by-step explanation:
Let's take this a step a time.
First we need to find how much the price of the flowers were in September.
We know that each flower cost $1.50 on October.
The October price was a 20% increase of the September price.
To calculate for the price of the flowers on September, we can solve it like this:
Let x = Price during September
1.2x = 1.50
We used 1.2 because the price of $1.50 is 120% of the original price.
Now we divide both sides by 1.2 to find x.

x = 1.25
The price of the flowers during September was $1.25 each.
Now the 7th grade class earned 40% of the selling price of each flower.
40% = 0.40
To find how much they made on each month, we simply multiply the percentage to the price and the number of flowers sold.
September = 0.40 x 1.25 x 900
September = 0.5 x 900
September = $450
Now for October.
October = 0.40 x 1.50 x 700
October = 0.6 x 700
October = $420
The 7th Graders earned more on September.
They earned $30 more on September than October.
Find the percentage of ratio to weight.
180/72 = 2.5
So 2.5 Earth Pounds = 1 Mars Pound
16*2.5 = 40 Pounds the rock weighs on earth.
Answer:
Using the inverse composition rule you know that if (fog)=x and (gof)=x then the functions are inverses.
(
g
o
f
)
=
(
7
x
+
1
)
−
1
7 this will result in (gof)=x
(
f
o
g)
=
7
x
−
1
7
+1
=
x
−
1
+
1
=x
graphically you can check this if it seems that the functions are reflected over the line x=y.
Step-by-step explanation:
Answer:
See below
Step-by-step explanation:
equal probability each occurs 1 time out of 16 possibilities
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Answer:
It is linear because the ratio of the change in the final cost compared to the rate of change in the price tag is constant