Tracey is taking a Biology class. In her class, quiz grades count twice as much as homework grades, and test grades count twice as much as quiz grades. She currently
has the following grades: Homework – 81, 77, 92; Quizzes – 75, 81; Test 82. She has one
more test to take. What must she score on the test to earn an 85% in the class?

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

thats not a system of equations, that is a solution

my dear correct answer is option number 3