A) For f(-1) we use the part of the piecewise function for when x < 0 because -1 < 0. Plug in -1 for x:
2(-1) + 3 = 1
b) For f(0), we use the part for when x

0.
4(0) + 5 = 5
c) For f(2) we use the part for when x

0.
4(2) + 5 = 13
Answer:
Two line are perpendicular when they are at right angles to each other.
The red line is perpendicular to the blue line in each of these examples:
Perpendicular Example
Step-by-step ex;planation:
Answer:
40%
Step-by-step explanation:
First, you have to divide 90 by 10 and get 9 and now figure out how many times you can divide 36 to get nine, four times. Next, now multiply 4 by ten and that is your percentage.