Which algebraic expression is equivalent to the expression below? 6(3x-2)

18x - 12

Step-by-step explanation:

multiply each term in the parenthesis by the 6 outside ( distributive law)

6(3x - 2)

= (6 × 3x ) + (6 × - 2) = 18x +(- 12) = 18x - 12

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

$649.60

step-by-step explanation: