The length of the radius of the dartboard is 9 in. The diameter is represented by the expression 2xplus8. Write an equation that you can use to solve for x. Then solve for x.
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Part 1
Write an equation that you can use to solve for x. Choose the correct answer below.
A.2 x plus 8 equals 18
2 x plus 8 equals 18
B.2 x plus 8 equals 7
2 x plus 8 equals 7
C.2 x plus 8 equals 11
2 x plus 8 equals 11
D.2 x plus 8 equals 9
2 x plus 8 equals 9
D. 2x + 8 = 9
Part 2
Solve for x:
2x + 8 = 9
2x = 1
x = 1/2
Therefore, the value of x is 1/2.