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How many multiples of 7 are there between 200 and 1,200? Hint: an = a1 + d(n − 1), where a1 is the first term and d is the common difference. a.143 b.150 c.142 d.145

Respuesta :

laurymiry1
an = 1200
a1= 200
d= 7
n=?

then get alone n from the equation we have
n= an - a1/d  +1

n= 1200-200/7 +1
n= 143
a.143

I hope this can to help you

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