Question

Using substitution, which number from the set {15, 25, 35, 55} makes the equation y+15=40 true?(1 point)
Responses

25


35


15


55

Answer 1

Using substitution, which number from the set {6, 13, 18, 26} makes the equation 2x+5=31 true?(1 point)
Responses

13
13

26
26

6
6

18

Answer 2

Priscilla has a number riddle for her friends. She wants them to guess what number she is thinking of. She tells them that her number can be represented by the x in the equation 3x−10=26 . Her friends guess {6, 12, 13, 36} . Using substitution, which guess was the correct number?(1 point)
Responses

13
13

36
36

12
12

6

Answer 3

25

Answer 4

13

Answer 5

The correct number is 12.

Let's substitute each guess into the equation and see which one satisfies it:
1. For x = 6: 3(6) - 10 = 18 - 10 = 8 (Incorrect)
2. For x = 12: 3(12) - 10 = 36 - 10 = 26 (Correct)
3. For x = 13: 3(13) - 10 = 39 - 10 = 29 (Incorrect)
4. For x = 36: 3(36) - 10 = 108 - 10 = 98 (Incorrect)

Therefore, the correct guess is x = 12.