Calculus (demand)

18) The demand equation is x + 1/6p - 10+0.

Compute the elasticity of demand and determine whether the demand is elastic, unitary, or inelastic at p=50.

a) 5; elastic
b) 1/9; inelastic
c) 7/6; elastic
d) 6; elastic

I choose answer A. Is that correct?

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