Lowes charges $1.80 fora 10­foot board, plus 5% for preparation cost. a. If you need 50 boards, how much would the preparation cost be for all 50? help please.

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?

Arational number that is equivalent to -20/4?