It is asking you to substitute or plug in the values.
Example:
Evaluate 3r(s+3) if r = -3 and s = 5
See that r? It means that you put in -3 in place of the r, and you put 5 in place of the s so it looks like this:
3*-3(5+3)
Now solve that using order of operations and you should get
-9*(5+3) (don't forget that your'e distributing here FIRST then add)
-45+-27
-72
That's how you solve an expression like that. This is only an EXAMPLE. Hope it helped.
Answer:

Step-by-step explanation:
we know that
the formula to calculate the distance between two points is equal to

we have

Convert mixed number to an improper fraction

so
we have

substitute the values in the formula



Convert to mixed number

Answer:
60 hours
Step-by-step explanation:
300 ÷ 30 = 10
10 x 6 = 60
Hope this helps :)
Answer:
Use a protractor
Step-by-step explanation:
Im still working on it give me a sec.