Theo was asked to find the measure of x in the following polygon.

Theo’s work is shown below. ^

Steps

Theo’s Work

Step 1

Step 2

Step 3

Where, if at all, did Theo first make a mistake finding the measure of x?

step 1

step 2

step 3

Theo did not make a mistake.

How is this equation completed? i cannot find any examples in the book.

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter? question 1 options: 3x2+38x+55 3x3+38x2+55x 5x+16 4x+16

Darcy deposited $390 into a savings account. as long as the account balance remains at or above $150, she does not have to pay a service fee for the account. for how many months can she withdraw $40 a month without having to pay service fees? a) 3 b) 5 c) 6 d) 9