Steve repairs elevators. when he is called to a job he uses the stairwell to go to the floor on which the elevator is located. in the modis building, he climbs 22 steps for every 15 feet of horizontal travel. in the sears tower, he climbs 17 steps for every 7 feet of horizontal travel. part a. what is the rate of change for each stairwell? part b. which stairwell will be easier to climb? explain your reasoning.

Question 7 of 47 1 point what is the equation of a line with a slope of 1/2 that passes through the point, (-2,5)? o a. 1/2x+3 o b. y=1/2x+5 o c. y=x+5 o d. y=1/2x+6

What does x = in this equation x+3+2x=x+5

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?