1

Problem

Find the value of x which satisfies the equation 0.5x + 3 equals 7.5.

2

Step

The given equation is

0.5x + 3 = 7.5

3

Step

Move the constant term to the right-hand side and simplify the equation:

0.5x = 7.5 - 3

⇒ 0.5x = 4.5

4

Step

Solve for x value:

\$ x = (4.5)/(0.5) \$

x = 9

5

Solution

So, therefore the x value is 9.

6

Sumup

Please summarize steps

Choices

7

Choice-A

If we substitute x = 6 into the equation 0.5x + 3 = 7.5, we get 0.5(6)+3 = 6 + 3 = 9, which is not equal to 7.5. Therefore, option A is incorrect

Wrong 6

8

Choice-B

If we substitute x=18 into the equation 0.5x + 3 = 7.5, we get 0.5(18) + 3 = 9 + 3 = 12, which is not equal to 7.5. Therefore, option B is incorrect

Wrong 18

9

Choice-C

If we substitute x = 9 into the equation 0.5x + 3 = 7.5, we get 0.5(9) + 3 = 4.5 + 3 = 7.5, which is equal to 7.5. Therefore, option C is correct

Correct 9

10

Choice-D

If we substitute x = 3 into the equation 0.5x + 3 = 7.5, we get 0.5(3) + 3 = 1.5 + 3 = 4.5, which is not equal to 7.5. Therefore, option D is incorrect

Wrong 3

11

Answer

Option

C

12

Sumup

Please summarize choices