The accompanying table shows the number of bacteria present in a certain culture over a 4 hour period, where x is the time, in hours, and y is the number of bacteria.Write an exponential regression equation for this set of data, rounding all coefficients to the nearest hundredth. Using this equation, determine the number of bacteria present after 8 hours, to the nearest whole number. Hours (x) Bacteria (v) 1487 1 1662 2 1830 3 2336 4 2676 Copy Values for Calculator Open Statistics Calculator
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
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2.
3.
The accompanying table shows the number of
bacteria present in a certain culture over a 4
hour period, where x is the time, in hours, and
y is the number of bacteria.Write an
exponential regression equation for this set of
data, rounding all coefficients to the nearest
hundredth. Using this equation, determine the
A rocket is shot off from a launcher. The
The number of newly reported erime cases in a
accompanying table represents the height of
the rocket at given times, where x is time, in
seconds, and y is height, in feet. Write a
quadratic regression equation for this set of
data, rounding all coefficients to the nearest
county in New York State is shown in the
accompanying table, where x represents the
number of years since 1995, and y represents
number of new cases. Write the linear
regression equation that represents this set of
data, rounding all coefficients to the nearest
tenth. Using this equation, find the projected
number of new cases for 2003, rounded to the
nearest whole number.
tenth. Using this equation, find the height, to
number of bacteria present after 8 hours, to
the nearest foot, at a time of 9.6 seconds.
the nearest whole number.
Time in Seconds (x) Height in Feet (y)
Hours (x) Bacteria (y)
Years since 1995 (x) New Cases (y)
0.7
194
856
1487
2
517
1
871
1
1662
2.9
708
924
2
1830
3.6
838
3
961
961
3
2336
4.9
1017
4
2676
1140
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