word problem

Question

Dolbear's law states the relationship between the rate at which Snowy Tree Crickets chirp and the air temperature of their environment. The formula is Upper T equals 50 plus Start Fraction Upper N minus 40 Over 4 EndFractionT=50+N−404/4,
where T is a temperature in degrees Fahrenheit and N is a number of chirps per minute. If N equals=74
find the temperature in degrees Fahrenheit, T.

Answer 1

If I am understanding the wording of the problem, the formula is

 

T = 50 + (N - 40)/4

 

If N = 74, T = 50 + (74 - 40)/4

 

T = 50 + 34/4

 

T = 50 + 17/2

 

T = 50 + 8.5

 

T = 58.5

 

The temp is 58.5 degrees F