Question

There is a positive correlation between the number of times the Striped Ground Cricket chirps per second and the temperature in degrees Fahrenheit. If a scatter plot is made with the number of chirps on the horizontal axis and the trend line is found to be y = 3x + 25, then what would you predict the temperature in degrees Fahrenheit to be when there are 20 chirps per second?

a. -1.6
b. 85
c. 135

Answer 1

i think a? not sure.

Answer 2

hint:

x = 20 in this case

Answer 3

B!

Answer 4

oh wait, they want the temp

Answer 5

yeah

Answer 6

sry i jumped the gun a bit

Answer 7

its alrite.

Answer 8

y = 3x + 25

20 = 3x + 25 ... Plug in y = 20 instead

20-25 = 3x

-5 = 3x

-5/3 = x

-1.6667 = x

x = -1.6667

so the closest answer is -1.6

Answer 9

so your first answer was correct

Answer 10

heehee. thanks for checking!

Answer 11

you're welcome, went a bit too fast, but good thing there's a way to verify this lol

Answer 12

yep.:)

Answer 13

and i can see that they put that b) 85 in there to throw people off...very tricky

Answer 14

but I guess that's normal