Question

If 3 times a certain number is increased by 4 the result is 28. What is the number?

If x is "the number," which of the following equations could be used to solve for the number?

c.3x + 4 = 28

b.3(x + 4) = 28

a.3x = 4 + 28

Answer 1

x = number

the equation to use is: 3x+4=28

3x+4=28

3x=24

x-24/3 =8

x=8