Celia is staring at the clock waiting for school to end so that she can go to track practice. she notices that the 5-inch-long minute hand is rotating around the clock and marking off time like degrees on a unit circle. part 1: how many radians does the minute hand move from 1: 25 to 1: 55? (hint: find the number of degrees per minute first.) part 2: how far does the tip of the minute hand travel during that time? you must show all of your work.

a)

b) 15.7 inches

Step-by-step explanation:

We know that the measure of complete circle is .

Therefore,

The minute hand move from 1:25 to 1:55, it means the minute have cover 30 minutes.

Now, 30 minutes=

In radians, 30 minutes=

Therefore, 30 minutes=

Also the length of  arc is given by

Now, for radius r= 5 inch and

Length traveled by  the tip of the minute hand travel during that time=

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,