1) Ms. Kitts works at a music store. Last week she sold 6 more than 3 times the number of CDs that she sold this week. Ms. Kitts sold a total of 108 CDs over the 2 weeks. Which system of equations can be used to find L, the number of CDs she sold last week, and t, the number of CDs she sold this week?

L = 3t + 6

108 = L + t

Step-by-step explanation:

first, define the variables:

L = # of CDs sold last week

t = # of CDs sold this week

then, let's write what the words of problem tells us in numbers:

"Last week (L), she sold 6 more (+ 6) than 3 times the number of CDs she sold this week (3t)

L = 3t + 6

"She sold a total of 108 CDs over 2 weeks (L + t)

108 = L + t

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source:

-2

7 - 9 = -2

reversed:

-2 + 9 = 7