Question

(07.01)

Which of the following values for x and y make the equation 4x + 2y + 3 = 19 true?
x=5, y = 3
x = 4, y = 5
x = 3, y = 2
x = 2, y = 5

Answer 1

5

Explanation:

Part A: 4 x 6 = 24 - 5 = 19 = 19, and v= is equal to or less than. Because 19 is the same as 19, saying it is larger than is false.

Part B (of two):

The answer is incorrect: 4 x 4 = 16 + 3 = 19 = 23.

20 + 3 = 23 = 23 = 4 x 5 = 20 x 5 = 20 x 5 = 20 x 5 = 20 x True, but we should also consider the other possibilities.

Incorrect: 4 x 6 = 24 + 3 = 27 = 23

Incorrect: 4 x 7 = 28 + 3 = 31 = 23

Incorrect: 4 x 8 = 32 + 3 = 35 = 23

As a result, 5 is the correct response!

Answer 2

Option A

• 4x + 2y + 3 = 19
• => 4(5) + 2(3) + 3 = 19
• => 20 + 6 + 3 = 19
• => 29 = 19 (False)

Option B

• 4x + 2y + 3 = 19
• => 4(4) + 2(5) + 3 = 19
• => 16 + 10 + 3 = 19
• => 29 = 19 (False)

Option C

• 4x + 2y + 3 = 19
• => 4(3) + 2(2) + 3 = 19
• => 12 + 4 + 3 = 19
• => 19 = 19 (True)

Option D

• 4x + 2y + 3 = 19
• => 4(2) + 2(5) + 3 = 19
• => 8 + 10 + 3 = 19
• => 21 = 19 (False)

Option C is correct.