Am assuming the text of the problem is:
"At 6:00 p.m., the temperature was 55 Fahrenheit. At 11:00 p.m. that same evening, the temperature was 40 Fahrenheit. What real number represents the average change in temperature per hour?"
Average change in temperature per hour = (55 - 40)/(11 - 6)
Average change in temperature per hour = 15/5
Average change in temperature per hour = 3 Fahrenheit per hour
We can use tangent to calculate the length of ST.

Here, the opposite side of the 60 degree angle is ST, and the adjacent is RS. Plug in what we know, we can use 'x' for side ST:

Solve for 'x', multiply 7 to both sides of the equation:

This is an exact answer for the length of ST, we can find an approximate with a calculator:
Answer:
Difference = $0.01
Step-by-step explanation:
Given that:
Cost of half gallon = $1.82
Cost of one gallon = $3.68
First we will convert gallons to ounces.
1 gallon = 128 ounces
half gallon = 64 ounces
Now,
we will find unit rate of both.
Unit rate of half gallon = 
Unit rate of one gallon = 
Difference= 0.03 - 0.02 = $0.01
Hence,
Difference = $0.01
Answer:
(A) y = 24
Step-by-step explanation:
Given GDEF is a parallelogram and m∠E = 108°
To find: value of y
In ║grm GDEF,
m∠D + m∠E = 180° (Consecutive angles of parallelogram are supplementary)
3y° + 108° = 180°
3y° = 180° - 108°
3y° = 72°
y = 72°/3 = 24°
Therefore, option (A) is the correct answer.