Jana is taking pledges for a bike-a-thon fundraiser. ivan pledged $4.25, plus $1.25 for each
mile that jana bikes. vicky pledged $5.75, plus $0.75 for each mile that jana bikes.
part a
write expressions for the number of dollars ivan pledged and the number of dollars vicky
pledged. use m for the number of miles that jana bikes.
part b
add the two expressions from part a to find the combined amount that ivan and vicky
pledged in terms of m.
part c
find an expression equivalent to the one from part b by factoring out the greatest common
factor from the two terms.

Part B:

4.25+1.25m+5.75+0.75m

Add—>

4.25+5.75=10

1.25m+0.75m=2m

Answer- 10+2m

*Dont trust me fully*

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

if im undersanding the question correctly, its organized from 10

step-by-step explanation: