Answer:
160
Step-by-step explanation:
10 x 20=200
10 - 2 = 8
8 x 20 = 160
Answer:
145
Step-by-step explanation:
just use a calculator
Answer:
11.7
Step-by-step explanation:

=11.7
Answer:
pattern
Step-by-step explanation:
.............................................
Answer:
Marta need to score at least 94 to receive an average of 90 or higher considering all five tests.
Explanation:
Marks received by Marta in four tests = 86, 84, 97 and 89
Let mark received in fifth test be x
We have average of five test is more than or equal to 90
So we have

So Marta need to score at least 94 to receive an average of 90 or higher considering all five tests.