A store has a sale where every item has a sale price that is 20% less than the regular price. Write an expression
that represents the sale price of an item if the regular price is p dollars.
Dena said, "To find 20% of a number, I should multiply by 0.20. So the sale
price of an item will be 0.20p.

Solve this 364x-64x=300x and 12(x2–x–1)+13(x2–x–1)=25(x2–x–1)

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?