Which expression is equivalent to b * b * b * b *

b⁴

Explanation:

b×b=b²     b×b=b²

b²×b=b³    b×b×b=b³

b³×b=b⁴    b×b×b×b=b⁴

homozygous. one is homozygous, while two is heterozygous.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18