Rocky needs at least $32 to buy an amplifying speaker. he already has $17. which graph best represents all the possible dollar amounts that rocky can save to buy an amplifying speaker? a. number line graph with open circles on 0 and 15 and shading in between. b. number line graph with closed circles on 0 and 15 and shading in between. c. number line graph with closed circle on 15 and shading to the right. d. number line graph with open circle on 15 and shading to the right.

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints