Question

On a bicycle, Laura started 4 miles from her house and rides 4 miles per hour away from her house.

Write an equation to model this situation (use
d for distance from her house miles and
h for hours)

Answer 1

d = 4 + 4h

Explanation:

According to question d is the total distance from Laura's house at time h .

Initial distance from house = 4 miles

speed of Laura = 4 miles per hour

formula for distance = speed * time

distance covered when time is h hours = 4 miles per hour * h hours

= 4h miles

Total distance from house is given as d, hence

d = Initial distance from house (4 miles) + distance covered when time is h hours (4h miles)

d = 4 + 4h

Thus, an equation to model this situation is d = 4 + 4h .