Sasha has a coupon to a local store that gives her 15% off one item. If the item she buys costs ddollars, the amount she will be charged can be represented by this expression
0.850
Which of these is equivalent to the expression?

1 d+0.15d
2 d-0.15d
3 0.15d
4 1.15d

The perimeter of ? cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.