What is the explicit formula for the arithmetic sequence? an = 1.2 + (n - 1)1.5 an = 1.5 + (n − 1)1.2

an = 1.5+ (n - 1)3.9

an = 3.9+(n-1)1.5

an = 1.2 + (n - 1) 1.5

Step-by-step explanation: opt A on edg

probability for j is 1/4

while

a is 1/6

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!