Lashawn wants to buy some music online. there are two plans to choose from. the first plan is a flat rate of $1.29 per download. the second plan has a membership fee of $21 and the fee of $.99 per download. let x be the number of downloads and c be the cost whem are the costs of the twp planes equal to each other?

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

4. a single woman uses an online cash flow calculator which reveals a cash flow of 203. what does this mean?

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.