21 because a triangle is always going to equal 180 so add those then subtract and it’s 21
Answer:
For
the function f(x) is continuous on
.
Step-by-step explanation:
We have the following function

For the function f(x) to be continuous on
it is sufficient to have continuity at x = 6, we need to ensure that as x approaches 6, the left and right limits match, this means that
,
which holds if and only if

namely if
.
First equation
a. 3x+5=65
b.3x=60 x=20
The answer is three hundred