Which of the following options best describes a bar graph? A graph that uses lines to compare two sets of data.

A graph of each data point that is used to determine a trend in the data.

A graph that uses bars to compare data across categories.

A graph that organizes data so that it can be compared and contrasted between categories.​

step-by-step explanation:

i dont get

this is false ^.^ lol

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step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -