Respuesta :
Try each answer into the equation in place of x and y
2x +3y +4 = 15
A) x = 6, y = 3
2x + 3y +4 = 15
2(6) +3(3) +4 =___ (should equal 15 to be the answer)
12 + 9 + 4 = 25
The equation equals 25, not 15, so A is not the answer.
B) x = 3, y = 5
2x +3y +4 = 15
2(3) +3(5) +4 = ___ (Should equal 15 to be the answer)
6 +15 +4 = 25
The equation equals 25, not 15, so B is not the answer
C) x = 6, y = 4
2x +3y +4 = 15
2(6) +3(4) +4 =___ (should equal 15 to be the answer)
12 + 12 +4 = 28
The equation equals 28, not 15, so C is not the answer
D) x = 1, y = 3
2x +3y +4 =15
2(1) +3(3) +4 = ___ (should equal 15 to be the answer)
2 +9 +4 = 15
The equation equals 15 so this would be the answer
D (or the last option) x = 1, y = 3 is the answer to your question
Hope this helps! :)
2x +3y +4 = 15
A) x = 6, y = 3
2x + 3y +4 = 15
2(6) +3(3) +4 =___ (should equal 15 to be the answer)
12 + 9 + 4 = 25
The equation equals 25, not 15, so A is not the answer.
B) x = 3, y = 5
2x +3y +4 = 15
2(3) +3(5) +4 = ___ (Should equal 15 to be the answer)
6 +15 +4 = 25
The equation equals 25, not 15, so B is not the answer
C) x = 6, y = 4
2x +3y +4 = 15
2(6) +3(4) +4 =___ (should equal 15 to be the answer)
12 + 12 +4 = 28
The equation equals 28, not 15, so C is not the answer
D) x = 1, y = 3
2x +3y +4 =15
2(1) +3(3) +4 = ___ (should equal 15 to be the answer)
2 +9 +4 = 15
The equation equals 15 so this would be the answer
D (or the last option) x = 1, y = 3 is the answer to your question
Hope this helps! :)
Answer: The correct answer choice is D.
Step-by-step explanation: I will show all the work done for each answer choice so it is more clear.
First Answer Choice's Work:
2(6) + 3(3) + 4
12 + 9 + 4
12 + 9
21
21 + 4
25.
Second Answer Choice's Work:
2(3) + 3(5) + 4
6 + 15 + 4
21 + 4
25.
Third Answer Choice's Work:
2(6) + 3(4) + 4
12 + 12 + 4
24
24 + 4
28.
Fourth Answer Choice's Work:
2(1) + 3(3) + 4
2 + 9 + 4
11
11 + 4
15.
Therefore, the correct answer choice is D.