If 3x + y = 18, then 2(3x +y) = (1 point) 36 2. if x =5, then 2x +5 is how much more than (1 point) 10 3. if x + y = 12, then 3x +3y = (1 point) 36 4. if 5.353=53k, what does k (1 point) 5. if x =3.6 and y=6.4, then 100(x + y) = (1 point)

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

Bring the fraction a/a-4 to a denominator of 16-a^2