exam Maths Puzzle Numerical Ability

Could I please get help with the following problem:

Find a general formula for the arithmetic sequence whose 8th term is -20 and the 17th term is -47

Thank You

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exam Other Question

Hello
what would be the equation of the line containing the geven poiint and slope. Need to rewrite each ezuation in standard form with integral coefficients.

(-2,6),m = -3/4

thank you. Please help solve the following homework problem:

4/x-5=6/8x+2

I get -9/13, but am not sure if that is the answer.