PLEASE HELP FAST if a rock falls from a height of 44 meters on Earth, the height H (in meters) after x seconds is approximately H(x) = 44 - 4.9x (a) What is the height of the rock when x = 1.3 seconds?

The height of the rock when x=1.3 seconds is meters

(Round to three decimal places as needed.)

(b) When is the height of the rock 8 meters?

The height of the rock is 8 meters when x | seconds.

(Round to two decimal places as needed.)

(c) When does the rock strike the ground?

The rock strikes the ground when xseconds.

(Round to two decimal places as needed.)

More challenges: 1) factor out the indicated quantity.8mn² + 7mn - m : factor out the quantity -m2) factor the polynomial by grouping.2vw + 7cv + 14cw + 49c²3) factor completely using the difference of squares along with factoring by grouping.25v³ - 25v² - 4v + 44) factor the sum of cubes. 125x³ + 645) q³ + 27r³6) factor completely. use difference of squares.729p^6 - 6^67) solve the equation(7x + 4)(9x - 1) = 08) a. find the values of x for which f (x) = 0b. find f (0)f (x) = x² + 2x - 489) find the x and y-intercepts for the function defined by y = f (x)f (x) = (x + 3)(x + 4)(x - 1)²10) factor the trinomial completely by using any method. remember to look for a common factor first. 3v² - 2v - 16