A train travels at a speed of 35 miles per hour. How far will the train travel in 5 hours? This is Math

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

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?