Pi Day Competition

Solve for variable

100

3z+4=34

z=10

200

c/11=2

c=22

300

6x-x-11=-90+9

x=-14

400

Systems of Equations find x and y

3x-y=7

2x+y=8

(3,2)

500

6x-x-1=26-4x

3

FOIL

100

(3z+5)(2z+7)

6z²+31z+35

200

(3x-8)(2x-4)

6x²-28x+32

300

(-x-3)(-x-5)

x²+8x+15

400

(x+5)(3x²-5x-4)

3x³+10x²-29x-20

500

(3x²+4)(2x-0)(x+2)

6x⁴+12x³+8x²+16x

Exponential Equations

100

(1/3) x 6^x at x = 2

12

200

10 x 2ⁿ at n = 5

320

300

(1/5) x 5^x at x = 4

125

400

7 x 2^k at k = 3

56

500

(4/5) x 4^y at y = 3

51.2

Real Numbers

100

Which is the rational number?

-2, 9, 0.63, 258

0.63

200

Which is the irrational number?

π, 72, .98, -7

Pi (π)

300

Greatest common factor of 8 and 12

4

400

Greatest common factor of 150 and 220

10

500

Least Common Multiple of 12 and 75

300