Question

Find an equation for the nth term of the arithmetic sequence.

a14 = -33, a15 = 9

Answer 1

Assuming the difference is the pattern, 42 is added to -33 to get 9 so 9 + 42 gives...\[a_{16} = 51\]

Answer 2

an = 4 • -3^n + 1

an = -3 • 4^n - 1

an = -3 • 4^n

an = 4 • -3^n

which of these will be the equation needed?

Answer 3

None of those make sense.. any number to the 15th or 16th power will be massive.. Are you missing parenthesis or something?

Answer 4

i am so sorry i mixed the answers up
here are the correct options

an = -579 + 42(n + 1)

an = -579 + 42(n - 1)

an = -579 - 42(n + 1)

an = -579 - 42(n - 1)

Answer 5

Plug in 14 and 15 into the choices, and see which one gives you a14 = -33 and a15 = 9.