Frank, carl, and vinny started a lawn mowing business over the summer. this table shows how many lawns each worker mowed during the summer months. display the data in matrix w with rows indicating workers. what is element w13? a.22b.29c.21d.19

A.22

Step-by-step explanation:

d. 19

Step-by-step explanation:

A matrix is an array of rectangular shape which consists of numbers, symbols, or expressions, arranged in rows and columns.

means element in first row third column. First row means Frank and third column means August.

So, the number of lawns mowed by Frank in August is

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this