The total cost of four pens and seven mechanical pencils is $13.25. the cost of each pencil is 75 cents.

a. the residual plot for model 1 has a random pattern and is a good fit for the data.

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

3,6 and 7.

step-by-step explanation:

a) unit place of 37 is 7

so the unit place of cube of 37 will be

7³= 343=3

the answer is 3.

b) unit place of 56 is 6, so the unit place of cube of 56 will be

6³= 216=6

the answer is 6.

c) unit place of 133 is 3, so the unit place of cube of 133 will be

3³= 27= 7.

the answer is 7.