Please help fast please! No questions just help!!
A school record in a certain race in 1960 was 3.8 minutes. In 1980 the school record in the same event was 3.65 minutes. Use a linear equation to predict the school record in 1990.
Choices are.
3.5 minutes
or
3.95 minutes
or
33.5 minutes

Question

Please help fast please! No questions just help!!
A school record in a certain race in 1960 was 3.8 minutes. In 1980 the school record in the same event was 3.65 minutes. Use a linear equation to predict the school record in 1990.
Choices are.
3.5 minutes
or
3.95 minutes
or
33.5 minutes

anonymous · Answer

The slope (time) decreases .15 minutes every 20 years. So in 10 years, it should decrease .075. 3.65 - .075 = 3.575...

anonymous · Answer

So the answer is 3.95?