Answer:
<u>94</u>
Step-by-step explanation:
Equating the mean to the scores :
- 88 = 79 + 89 + 90 + x / 4
- 352 = 258 + x
- x = <u>94</u>
Answer:
B: 280
Step-by-step explanation:
The regression line predicts that when x equals 5:

In order to find the value for y, one must simply apply the following logarithmic property:
if :
then: 
Applying it to this particular problem:

Therefore, the regression line predicts y will equal 280 when x equals 5.
-21/5
Multiply 4 and 5, add 1
The value or outcome would be -6.25 .
Answer:
Choice A. 
Step-by-step explanation:
Turn the mixed numbers into improper fractions:
Flip the second term and multiply:
Simplify: