A family built a house in a beach resort area. In 1990, the house was 430 ft from the water. With erosion, the house was 400 ft from the water in 2000.

In what year will the house be only 250 ft from the water?
a.
1990
c.
2015
b.
2004
d.
2050

Question

A family built a house in a beach resort area.  In 1990, the house was 430 ft from the water.  With erosion, the house was 400 ft from the water in 2000.

In what year will the house be only 250 ft from the water?
a.
1990
c.
2015
b.
2004
d.
2050

anonymous · Answer

It looks like it is receding 30 ft every 10 years. So how many more ft does it need to recede to get to 250?

anonymous · Answer

y=(400-430)/(2000-1990)x+ 430 
Y=-3x+430

anonymous · Answer

Okay thank you both :)