The 12-inch diameter pizza for $12.50 or the 20-inch diameter pizza for $17.50.

20 inch

Step-by-step explanation:

the 12" pizza for $12.50 works out to 11 cents per square inch and the 20" for $17.50 works out to 5.5 cents per square inch. So, basically, you're getting twice as much pizza for only $5 more if you go the route of the 20

$9.41

step-by-step explanation:

the equation of the parallel line would be y = 2x + 9

step-by-step explanation:

to start we need to find the slope of the original line. we can do that by looking at the coefficient of x, which is 2

since the slope of the original line is 2 and parallel lines have the same slope, we know the new line will also have 2 slope. now we can use that along with the point given in point-slope form to get the find equation.

y - y1 = m(x - x1)

y - 5 = 2(x + 2)

y - 5 = 2x + 4

y = 2x + 9