Solve and check |2x + 1| = 9

so the lines mean absolute value

which is the exact distance from zero that the number is

now

you subtract one from nine which makes it 2x=8

then

you divide nine by 2x which makes it

x=4

So the answer is four

if it helps mark me brainliest please

-5,4

Step-by-step explanation:

I know that 2 numbers will work because it's an absolute function.

2x+1=9

2x=8

x=4

2(-5)+1=|-9| = 9

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: