Question

the height of a sunflower plant varies directly with its age. once it has sprouted from the ground, when a sunflower is 2 week old its is 38 centimeters tall. when it is 6 weeks old it is 114 centimeters tall.how tall is a snflower plant that is 3 1/2 weeks old?

Answer 1

66.5 is the answer

`38 / 2 = 19`

`19 / 2 = 9.5`

`19 * 6 = 57`

`57+ 9.5 = 66.5`