1. An arrow is shot from the top of a platform. The path of the arrow can be modelled by the relation h = -0.005(t - 26)2 + 5, where h is the height of the arrow in metres and
f is the time in seconds after the arrow was shot.

(a) State the vertex of the parabola.

(c) How long will it take the arrow to reach
its maximum height?

(d) What is the maximum height of the arrow?

(e) Calculate the height after 10 seconds​

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

Factor this polynomial completely. 12x^2+ x-6