What is the image of (4,-2) after a dilation by a scale factor of 1/2 centered at the origin?

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp