Answer:
28
Step-by-step explanation:
Plug in the corresponding numbers to the corresponding variables. Note that:
m = 7
r = 8
t = 2
mr/t = (7 * 8)/2
(7 * (8/2)) = 7 * 4 = 28
28 is your answer.
~
for an expression or relation to be a function, it must not have any x-coordinate values repeated, let's check this one

Answer:

Step-by-step explanation:
Since the slope is -5 is either C or D. Let's replace
in either to see what we get.
C:
Nope.
D:
Good!
I am assuming this is a triangle.....P = a + b + c
P = 2a - 3 + 2a + 3a + 1....combine like terms
P = 7a - 2 <==
Answer:
A for the first one.
Second one, I'm not sure, but I'd guess it'd be A
Step-by-step explanation: