Braden bought 18 pencils for $4.50. let x represent the number of pencils purchased, and let y represent the total cost. just give me the coordinate points and i'll plot it.

Braden bought 18 pencils for $4.50.

If x represents the number of pencils purchased, and y represents the total cost, then

x=18,

y=4.50

and

point (x,y) will have coordinates (18,4.5).

(18,4.5).

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).