I need help with these, saving money with discounts

  i hope this helps!   :)

1.) 70

2.) 36.75

3.)126.65

Step-by-step explanation:

1.) .3 * 100 = 30

100 - 30 = 70

2.) .25 * 49 = 12.25

49 - 12.25 = 36.75

3.) .15 * 149 = 22.35

149 - 22.35 = 126.65

no not all of them.

step-by-step explanation:

some of them have a square base.

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.