~f r e e ~ p o i n t s ~ i f ~ y o u ~ a n s w e r ~ t h i s ~ I m P o S s I b L e ~ q u e s t i o n~ ~ w h a t ~ n i n e ~ p l u s ~ t e n? ~
~What's nine plus ten?~
~What's 9 + 10?~

21

Step-by-step explanation:

(9 + 10) (base x) = 21 (base y)

9(1) + [1(x) + 0(1)] = 2(y) + 1

2y = 8 + x

y = 4 + x/2

x = 10, so y = 9

x = 12, so y = 10

x = 14, so y = 12

x, y = 4 + x/2

infinite number of solutions

21 COULD BE ONE OF INFINITE

the 4th choice is the correct one

step-by-step explanation:

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2