Tommy is buying used books for school. the price of the books is $180. he uses the 30%-off student discount and there is a 4% sales tax.

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2

none.

step-by-step explanation:

m

1

=

5

m1=5

b

=

−

1

b=-1

find the slope and y-intercept of the second equation.

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m

2

=

0

m2=0

b

=

−

6

b=-6

compare the slopes

m

m of the two equations.

m

1

=

5

,

m

2

=

0

m1=5,m2=0

compare the two slopes in the decimal form. if the slopes are equal, then the lines are parallel. if the slopes are not equal, then the lines are not parallel.

m

1

=

5

,

m

2

=

0

m1=5,m2=0

answer:

c) the x-coordinate of the center of the circle increases by 3