A three-character code uses the letters D and Q. Either of the letters may be repeated.

Find the probability of a code with exactly two D’s. (Hints: Use a list or a tree-diagram to help you. Also, notice the language. They only care about getting exactly two D's. They do not care about the order of the letters.)

the answer i believe is 27 units.

step-by-step explanation:

the answer is a. 72. but i cant answer with less than 20 characters so here's some random text talking about it.

b: y = 2x + 2

step-by-step explanation:

y = 2x + 1

we want a line that is parallel, so it will have the same slope

the line is in the form y= mx+b, so the slope is 2

we have a slope and the y intercept (0,2)

since x is 0 we know the y point which is the y intercept

we can use y= mx+b to write the equation of the line

m is the slope and b is the y intercept

y = 2x +2

-8,5

step-by-step explanation: