Suppose Bob does a linear regression that will use cost of a product to the number of days before being purchased on Facebook marketplace. He finds there is a strong positive linear relationship and the regression line is Y = 7+.10X. Interpret the slope.

Group of answer choices

As price increases by $1, the number of days before being purchased increases by .10

As the number of days until being purchased increases by 1, the price increases by $.10

As the price increases by $.10, number of days until purchase increases by 7.

As the price increases by $1, the number of days until purchase increase by 7 + .10(1) = 7.10.