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in a sequence of numbers, a3=3, a4=7, a5=11, a6=15, and a7=19. based on this information, which equation can be used to find the nth term in the sequence, an?​

Respuesta :

Answer:

Step-by-step explanation:

sequence is a1,a2,a3,a4,a5,a6,a7,...

or a1,a2,3,7,11,15,...

d=a4-a3=7-3=4

a3=a1+(3-1)d

3=a1+2d

3=a1+2×4

a1=3-8=-5

an=a1+(n-1)d

an=-5+(n-1)4

an=-5+4n-4

an=-9+4n

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