7). Evaluate for a = 8; b =  4; c = 10: Answer:_______  
8). Solve these equations (find x):

10). First write the equation, then solve it: If you take a third of my number and increase it by 6, you get 8. What is my number?  Equation: __________________ x = _____ 
11).
I have 3 numbers. Two of the numbers are 86 and 94. The mean (average) of the 3 numbers is 97. What is the third number? Answer:_________ 
12). Find the probability of drawing cards out of a standard deck
of
52 cards:

a). what is the probability of rolling a sum of 2? _________ 
b). what is the probability of rolling a sum of 9? _________ 
15). Find the circumference C = _______  
16). Find the area of this half circle: Area: _____  