You can try to use the internet for the answer to some of those questions.
Answer:
the first option
Step-by-step explanation:
local max is the highest point which is (-1,1.17)
and local min is the lowest point which is (2,-3.33)
Answer:
1:9
Step-by-step explanation:
6×60=360min
40:360
1:9
In a triangle, the total angle is 180 degrees. A straight line is always 180 degrees. With this in mind, the following can be obtained:

These are simultaneous equations.

When your not sure if the fraction is the same