Solve the problem.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. (F = 
C + 32)
A. C ? 87.77°
B. C ? 373.96°
C. C < 373.96°
D. C ? 87.77°
Answer: A
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.
A. km B. cm C. mm D. m
Find the largest open interval where the function is changing as requested.Decreasing y = 
+ 7
A. (-7, 0) B. (7, ?) C. (0, ?) D. (-7, 7)
Decide which of the 5 properties of a commutative group (closure, identity, inverse, associative, commutative) hold for the given system.
A. Closure, identity, associative, and commutative only B. None of them C. Closure, identity, inverse, and associative only D. Closure, identity, and commutative only
Simplify by using the order of operations. Round your answer to the nearest hundredth, if necessary.43.6 - 4.1 ? 7.5
A. 12.85 B. 32.0 C. 148.01 D. 312.00