Answer:
Step-by-step explanation:
We do not consider zero to be a positive or negative number. For each positive integer, there is a negative integer, and these integers are called opposites. For example, -3 is the opposite of 3, -21 is the opposite of 21, and 8 is the opposite of -8. ... If an integer is less than zero, we say that its sign is negative
Step-by-step explanation:
A number that is negative is less than 0, so



So this function is negative, when x is less than -2
To calculate how many points this person got, take 90% of the total:
0.9(70) = 63
A test score of 90% is 63 points out of 70.
Wow dude u in college, i wish i could help but im in middle school 8th grade. I guess u could try to go on google and kad academy or whatever its called to get help if no one knows how to do this