Question

A waterfall is n times the height of its picture on a postcard. Which equation represents the height, y, of the waterfall if the picture is 7 cm tall?

A. y = 7n
B. y = 7 + n
C. y = n - 7
D. y = 7n

Answer 1

The equation representing the height of the waterfall is 'y = 7n', where 'n' is the multiplier of the picture's height on the postcard to find the waterfall's actual height.

Step-by-step explanation:

The student asked which equation represents the height, y, of a waterfall if the picture on a postcard, which is 7 cm tall, is n times less than the actual height. The correct equation to represent the height of the waterfall is 'y = 7n' since 'n' times the height of the picture equals the height of the waterfall.