Given f(x) = 2x + 1, evaluate f(-1).

b.  -1

Step-by-step explanation:

To find f(-1), you need to plug -1 wherever there is an x in f(x).

f(x) = 2x + 1

f(-1) = 2(-1) + 1

f(-1) = -2 + 1

f(-1) = -1

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.