6. customers at the palace pro shop receive a 20% discount if they are members. all customers

must pay 7% in sales tax. the function f(x) = 0.8x is used to determine the price of an item after the

20% member discount, wherex is the regular price of the item. the function g(x) = 107x is used to

determine the total amount customers pay for a purchase after all discounts are applied. which

function can be used to determine t(x), the total amount a member pays for an item with a regular

price of x dollars?

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

The half-life of a certain material is 0.004 second. approximately how much of a 20-gram sample will be left after 0.016 second? a. 5 grams b. 16 grams c. 0.32 gram d. 1.25 grams