ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing.

82 degrees.

Step-by-step explanation:

At 4:00 p.m. the temperature, unknown, was at a degree that had dropped by 18, to 64.

According to the information given, you can set the equation up, like so:

x - 18 = 64

All you need to do is add 18 to 64:

x - 18 = 64

  + 18   + 18

x = 82

So, the temperature at 4:00 p.m. was 82 degrees.

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !