Astore sells a package of 25 trading cards for $5.25.explain how you can tell that the unit price per card is less than $1.what is the unit price per card?

Urgent? will give brainliest given that the blue triangle is a right triangle, which expression correctly gives the area of the red square? a) a2 + b2 b) a2 - b2 c) a2 - c2 d) c2 - a2