The beta club is having some posters printed and they only have $1500 to spend. the printer charges $160 plus $2.50 per poster. how many posters can they afford to have posted?
612 posters
536 posters
64 posters
10 posters

536 posters

Step-by-step explanation:

So the club only has $1500 to spend, you can write this down as the beginning of your equation (1500=)

Now we know that the printer charges 160 as a BASE so you should now have (1500=160)

We also know that it costs an extra $2.50 per poster. You can rewrite this as:

1500=160+2.5(x)

Now subtract 160 from both sides to get:

1340=2.5(x)

Now divide 2.5 from both sides to get x by itself:

536=x

Therefore they are able to afford 536 posters

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.