14
QuizMultiple Choice
Adding and Subtracting Matrices — Unit test
Question 14 • NC-Math 4 CR
A sand dune stands 5 feet above sea level. The hill is eroding at a rate of 1 foot per 20 years. Let y represent the height of the sand dune after x years. Which equation represents the situation?
Answer
A
y = negative StartFraction 1 Over 20 EndFraction x minus 5
B
y = negative StartFraction 1 Over 20 EndFraction x + 5
C
y = negative 20 x minus 5
D
y = negative 20 x + 5