9. the regular price of an item at a store is p
dollars. the item is on sale for 20% off the regular
price. some of the expressions shown below
represent the sale price, in dollars, of the item.
expression a: 0.2p
expression b: 0.8p
expression c: 1 -0.2p
expression d: p -0.2p
which two expressions each represent the sal
price of the item?
a expression a and expression e
b expression b and expression c
c expression b and expression d
d expression c and expression d

it is true

step-by-step explanation:

all the combinations add up i used   calculator

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.

d 600 because 15*10*2=300

300+300=600

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15