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http://mathnotations.blogspot.com/2014/08/free-ccsssatchallenge-math.html

1. Reg price:$N

40% discount $32 better than successive disc of 20%,20%

N=?

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2.

2^100-1 must be div by

I. 2^10-1

II. 2^50-1

III. 2^50+1

(A)I (B)II (C)I,II (D)II,III (E)I,II,III

Soln?

3.

Need quarters&dimes for 35¢ bus fare. Asked bank for most I could get from $10. How many dimes did I get?

Soln?

4.

(3/a)•(3/(a-12)) = -1

a=?

Relate this equation to a coord problem involving a right angle!

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5.

Mork's age

O-yrs 46 90

E-yrs 1 10

When O-age:E-age=5:1, E-age=? (Assume linear)

Soln sent to inbox?

6. Inscribe a circle of rad=1 in a reg hexagon and inscribe a 2nd reg hex in the circle. Show that the avg of the areas of the hex's = (7√3)/4.

What does this have to do with π?

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