Solve the inequality.In order for a chemical reaction to take place, the Fahrenheit temperature of the reagents must be at least 
. Find the Celsius temperatures at which the reaction may occur. 
Round your answer to hundredths of a degree.
A. C ? 222.48°F
B. C ? 41.01°F
C. C ? 41.01°F
D. C < 222.48°F
Answer: C
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Solve the problem.In a certain animal species, the probability that a female will have 0, 1, 2, 3, or 4 offspring in a given year is .31, .21, .19, .17, and .12 respectively. Find the expected number of offspring.
A. 1.75 B. 2 C. 1.58 D. 1.38
Solve the problem. Use 3.14 for ?.The striking circle in field hockey is a semicircle with a radius of 15.9 yd. Find the area of the semicircle.
A. 3175.2936 yd2 B. 793.8234 yd2 C. 396.9117 yd2 D. 99.852 yd2
Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in the ordered pair form.
A. {(-1, 0)}
B. 
C. {(5, -4)}
D. ?
Factor completely. If the polynomial cannot be factored, write "prime."8x2 + 6x - 9
A. (8x - 3)(x - 9) B. (8x - 3)(x + 3) C. (4x + 3)(2x - 3) D. (4x - 3)(2x + 3)