Izzi's Pizza wants to offer at least 15 options for ordering 2 vegetable topping pizzas. What is the minimum
number of vegetable topping choices they need to offer?

6 vegetable topping choices.

Step-by-step explanation:

If we have two toppings out of X, the number of possible combinations is:

and we want that c ≥ 15

We can do it by brute force:

Let's select x = 5 for example:

So with 5 vegetable toppings we have not enough, let's see with 6.

So with 6 options we have exactly 15 different combinations, the correct answer is 6.

parallel and congruent

step-by-step explanation:

the movement of translation is linear.   these have the same translation because you are using the same rule for each point of the triangle so you will see the same slope being used to get from a point on the triangle to its image.

same slope!   you should think parallel when you see those 2 word together (well unless it's the same line but it can't be because we are coming from different points here)

congruent! because each point is being moved the same distance.