Answer:
Correct choice is B
Step-by-step explanation:
Let x% be your final test score, then the average of all test scores is

Since you must have an average between 80% and 89%, then

X is measured in percent, then the greatest value of x can be 100%. You get that

Answer:
144 hope it helps
Step-by-step explanation:
Answer:
-30
Step-by-step explanation:
substitute the values and get -30
Answer:
f
−
1
(
x
)
=
9
x
−
18
Step-by-step explanation:To find inverse for this problem interchange the variables and solve for y
Answer:
C
Step-by-step explanation:
Group like terms
= 2x - x +3 +5
Add the similar 'elements'
= x + 3 + 5
Add the numbers
3 + 5 = 8 + x
= x+8