Question

given the progression 1,4,7,10,13 ....... calculates the term of the place 9 and the sum of the first
5 terms

Answer 1

Respuesta:

Explicación paso a paso:

Formula

an.=a1+(n-1)r

a9=1+(9-1)3

a9=1+24=25

r =razon

n= número de termino