Find the rule for the nth term of the following sequence 12, 18, 24, 30

A a.=9+3n

B a.=8+4n

C a.=12+3n

D a.=6+6n

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2