Susan needs to choose between two local caterers, Peter's and Jimmy's, for her school's annual spring fair. The graph shows the cost per person quoted by each caterer for different numbers of guests. For a group of 30 guests, the cost at Jimmy's is
More than $300
, which is
more than
the cost at Peter's. If a third caterer offers a price of $650 for 70 guests, this offer is cheaper than
.

$450 i think. hope this ☺

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus

is the anwser b. (-13)?