A department store is having a sale. The advertising for the sale is shown below: "30% off if the marked prices total more than $100. If you buy three items, you get the least expensive free." a. What are at least two pieces of info needed to solve a problem about buying items and saving the most money? b. What makes this advertisement confusing to a buyer? c. Suppose you buy 3 items at marked prices of $40, $40, and $30. Which sale (30% off more than $100 OR free item) would you save the most money with?

3.how is solving radical equations different than solving linear equations?

step-by-step explanation:

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

18.8cm hope i at all

step-by-step explanation: