The histogram shows the scores of each participant in a game from a total of 100 participants. 
What is the ratio of participants who score 80-99 to the total number of participants?
A. 
B. 
C. 
D. 
Answer: D
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Find the exact value of the product.sin 15° sin 45°
A. 
B. 
C. 
D. 
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 = 0.0903 ? 1.3384x C. y = 0.0903x D. y = 1.3384x
Find the perimeter of (distance around) the given figure by adding the lengths of the sides.
A. 5.9 m B. 7.1 m C. 11.8 m D. 10.6 m
Round as indicated.456 to the nearest hundred
A. 600 B. 400 C. 500 D. 490