1. The weight of a newborn animal is given by the formula W = 3d + 9, where W is the weight

in grams and d is the number of days since hatching.

(a) What is the independent variable?

(b) What is the dependent variable?

(c) What will the weight of the newborn animal be 3 days after it hatches?

Respuesta :

A. The independent variable is ā€œdā€, the number of days.

B. The dependent variable is the weight because it is dependent on the number of days.

C. To find the weight after 3 days just plug in 3 for ā€œdā€. You end up with W = 18 grams.

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