Question

1. what is the measure of $\angle 4$ if $\angle 4 = 3a + 40$ and $a = 18$?

a. 94 degrees
b. 120 degrees
c. 80 degrees
d. 104 degrees

Explanation:

Step1: Substitute $a=18$ into formula

$\angle4 = 3(18) + 40$

Step2: Calculate the product

$3(18) = 54$

Step3: Sum to find final value

$\angle4 = 54 + 40 = 104$

Answer:

d. 104 degrees