Answer:
plus and minus
Step-by-step explanation:
example : 3 ± 5 = 8 or -2
Check the picture below
notice, the run is half 35
recall slope = rise/run
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.
The answer is b. k=64 t=52.