Anna has the following averages in his math class:
homework avg: 95
quiz avg: 90
test avg: 87
final exam: ? ?
if the teacher weights homework at 20%, quizzes at 20%, test at 40%, and the final exam at 20%, what is the minimum grade anna can make on the final so that she scores a 90 in the class?
a. 86 c. 94
b. 91 d. 98

Option 'b' is correct.

Step-by-step explanation:

Since we have given that

Average marks in Homework = 95

Average marks in Quiz = 90

Average marks in Test = 87

According to question, we have that the teacher weights homework at 20%, Quizzes at 20%, Test at 40%, and the final exam at 20%

Total score in the class = 90

So, Score of homework is given by

Score of Quiz is given by

Score of test is given by

So, it becomes,

So, minimum grade Anna can make on the final is given by

Hence, Option 'b' is correct.

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation:

step-by-step explanation: