The constant term in the equation is -20 because you will always be subtracting 20 no matter how big x is
Answer:
$522.99
Step-by-step explanation:

Fv = total amount plus interest over the given period of time
P = Principal amount deposited i.e $500
r = interest given 1.5% i.e 0.015
n = period of time the principal remains deposited. In this case annually i.e 12 months


FV = $522.99
We can first add up the cards so we know how many we have in all:
16 + 16 + 18 = 50 cards
We can do this a little bit easier if we get the "16"-cards in one number total.
16 + 16 = 32

= 32 x 2 =

50 x 2

= 64 : 2 = 32 %
100
We did just divide the % of two types cards on 2, so we get the %-chance of 1 type card.
I am not quite sure, but I think that 32 % is the correct answer.
Area of a circle is:
A = (3.14)r^2
The picture shown is that the radius is 4
So,
A = (3.14)4^2
A = 50.2
~