Use the REGRESSION feature on a graphing calculator.A strain of E-coli Beu-recA441 is placed into a petri dish at 30?Celsius and allowed to grow. The following data are collected. Theory states that the number of bacteria in the petri dish will initially grow according to the law of uninhibited growth. The population is measured using an optical device in which the amount of light that passes through the petri dish is measured. 
Find the exponential equation in the form y = a ? bx, where x is the hours of growth. Round to four decimal places.
A. y = 1.3384 ? 0.0903x
B. y = 0.0903x
C. y = 0.0903 ? 1.3384x
D. y = 1.3384x
Answer: C
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Graph the function as a solid curve and its inverse as a dashed curve.f(x) = 2 - x2, x ? 0 
A. 
B. 
C. 
D. 
Solve the problem.A 41-in. piece of string is cut into two pieces. One piece is used to form a circle and the other to form a square. How should the string be cut so that the sum of the areas is a minimum? Round to the nearest tenth, if necessary.
A. Square piece = 10.1 in., circle piece = 9.7 in. B. Square piece = 0 in., circle piece = 41 in. C. Circle piece = 9.9 in., square piece = 31.1 in. D. Square piece = 9.9 in., circle piece = 31.1 in.
Provide an appropriate response.Steve Lancaster wants to apply lime to a field with dimensions of 
mi × 
mi. Find the area in square miles.
A. 
mi2
B. 
mi2
C. 
mi2
D. 
mi2
Plot the points in a rectangular coordinate system.
(5, –2), (–4, 1), (3, 4), (–2, –4)