Which of the following is the number 0.008005 written in scientific notation?
a. 8.005 x 10(squared)
b. 8.500 x 10(to the negative third power)
c. 8.005 x 10(to the negative fourth power)
d. 8.005 x 10(to the negative third power

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

i think it would be c

mark brainliest if im right

step-by-step explanation: