You are buying boxes of cookies at a bakery. each box of cookies costs $4, . in the equation below, c represents the number of boxes of cookies you buy, and d represents the amount the cookies will cost you (in dollars). the relationship between these two variables can be expressed by the following equation: d=4c, identify the dependent and independent variables.

the given problem looks very confusing because of the

unnecessary symbols and repeated letters or words. but i believe the correct

given variables are:

c = the number of boxes of cookies that are bought

d = which represents the cost of the amount of box of

cookies bought

the two variables are related by the given equation:

d = 4 * c

we are to find for d when c = 12. we can solve for d by

simply plugging in the value of c in the equation, that is:

d = 4 * 12

d = 48

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb