the heart graph is not a function
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-45,-55,-65
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A(30) = -1 + (30 - 1) * 2 = -1 + 29 * 2 = -1 + 58 = 57 <==
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the vertical line test
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range is { 1,7,13 }
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I am having a problem with the last one....with the points that are listed, it is not a function...because u have 2 x- values that are 4
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Given that Tom is making a punch that contains 80% cranberry juice and the rest ginger ale. The punch has 2 liters of ginger ale.
Part A:
Let the number of litres of cranberry juice be x, then the total number of liters of the punch is given by x/0.8
Thus, x + 2 = x/0.8
0.8x + 1.6 = x
0.2x = 1.6
Therefore, the equation with one variable that can be used to find the total number of liters of canbelly juice and ginger ale in the punch is: 0.2x = 1.6, where x is the number of liters of canberry juice in the punch.
Part B.
Given from part A that the number of liters of canberry juice in the punch is given by 0.2x = 1.6, where x is the number of liters of canberry juice in the punch.
Therefore, the number of liters of canberry juice in the punch is x = 1.6 / 0.2 = 8 liters of canberry juice.
Answer:
36 trees
Step-by-step explanation:
We are told that It takes four workers six hours and 45 minutes to plant 24 trees. Also that the time it takes to plant trees varies directly with the number of trees and inversely with the number of workers.
Thus,
t ∝ x/n
Where;
x is number of trees
n is number of workers
Now, opening the proportion symbol, we have;
t = kx/n
Where k is the constant of proportionality.
t = 6 hours 45 minutes = 6¾ hours = 6.75 hours
Plugging in the relevant values, we have;
6.75 = 24k/4
k = 4 × 6.75/24
k = 1.125
Now, we want to know how many trees could 9 workers plant in four and a half hours (4.5 hours)
Applying the same as above and Plugging in k = 1.125, we have;
4.5 = 1.125x/9
x = 9 × 4.5/1.125
x = 36 trees
I believe the correct answer is B. :)