The interest would be 3.75 x 6 = 22.5
so the answer is $22.5 $272.50
Answer:
That is administered and controlled
Step-by-step explanation:
A variable is the condition or a product that may vary without the influence of any investigator. Such variables can be found abundantly in our daily lives, ranging from air to sunlight. Controlling such variables ensures the limitation of their influence on the outcome of an experiment. In connection to this experiment, the variables that are controlled are the mineral content in the water, the amount of bacteria food, the amount of light and the the constant temperature of 20 degrees C.
If not administered or these variables controlled, the experiment would not clearly explain the impact of caffeine on the heart beat of the water fleas as other variables may have influenced it. Thus variables are controlled to study the singular impact of any agent or effect.
All you have to do it combine one pair of like terms with eachother for each time you move further on the pyramid.
PYRAMID A :
1ST LINE : -2x + 3
2ND LINE : -9x + 6 and 7x - 4
3RD LINE : 3x - 4 and -12x + 10 and 7x - 4
4TH LINE : 2x - 3 and x - 1 and -12x + 10 and 7x - 4
5TH LINE : -6x + 0 and 8x - 3 and x - 1 and -12x + 10 and 7x - 4.
6TH LINE : 2x - 6 and -8x + 6 and 8x - 3 and x - 1 and -12x + 10 and 7x - 4
7TH LINE : (we'll combine the first two terms from below) -1x - 2 and 3x - 4 and -8x + 6 and 8x - 3 and x - 1 and -12x + 10 and 7x - 4.
8TH LINE : it's already given in Pyramid A.
. . .
PYRAMID B :
1ST LINE : 2x - 3y - 6
2ND LINE : 4x - 2y - 5 and -2x - y - 1
3RD LINE : 5x - y - 5 and -x - y and -2x - y - 1
4TH LINE : -x + 2y - 3 and 6x - 4y - 2 and -x - y and -2x - y - 1
5TH LINE : -2x + 2y - 3 and x + y and 6x - 4y - 2 and -x - y and -2x - y - 1
6TH LINE : 2x + 3y - 4 and -4x - y + 1 and x + y and 6x - 4y - 2 and -x - y and -2x - y - 1
7TH LINE : 3x + y + 8 and -x + 2y + 4 and 4x - y + 1 and x + y and 6x - 4y - 2 and -x - y and -2x - y - 1
8TH LINE : given in the attachment, Pyramid B