Can anyone help i have no idea

there you go

Step-by-step explanation:

a)3-² = 1/3² = 1/9

b) 4-³ = 1/4³ = 1/64

c) 2-^6 = 1/2^6 = 1/64

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