Kendra spent $1.20 for 4 pieces of gum. taliyah bought a 20-pack of gum for $6.60. jamil spent his last dollar on 5 pieces of gum. fredrick’s friend charged him $0.25 for one piece of gum. whose gum is the cheapest?

Jamil's gum were the cheapest ($.20).

Step-by-step explanation:

Kendra's Ratio: $1.20/4

- Kendra's cost per gum is $.30

Taliyah's Ratio: $6.60/20

- Taliyah's cost per gum is $.33

Jamil's Ratio: $1/5

- Jamil's cost per gum is $.20

Fredrick's Ratio: $.25/1

- Fredrick's cost per gum is $.25

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:

1/4 because there is 4 grades.