Solve the system by elimination.x + 3y = 33x - 8y = -8
A. {(0, 1)}
B. {(1, 1)}
C. {(0, 0)}
D. {(1, 0)}
Answer: A
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Find R2 if R1 = 330 Kê, R3 = 330 Kê, and RT = 660 Kê.
a. 0
b. 330 Kê
c. 450 Kê
d. 990 Kê
e. 1.32 Mê
Find the roots of the equations.0.13(x + 30) + 0.17(x + 60) = -12.9
A. {-30} B. {30} C. {90} D. {-90}
Solve the equation by the zero-factor property.x2 - 2x - 24 = 0
A. {5, - 5} B. {-20, -4} C. {6, -4} D. {-6, 4}
On the basis of data collected during an experiment, a biologist found that the growth of the fruit fly (Drosophila) with a limited food supply could be approximated by the exponential model 
, where t denotes the number of days since the beginning of the experiment.
? What was the initial fruit fly population in the experiment? __________ ? What was the maximum fruit fly population that could be expected under this laboratory condition? __________ ? What was the population of the fruit fly colony on the 20th day? Please give the answer as an integer. __________ ? How fast was the population changing on the 20th day? Please give the answer as an integer. __________ What will be an ideal response?