I need help again :/

They have a 0 in the ones place

Step-by-step explanation:

Because you start with 10, you will always have a 0 at the end.

30, 90, 270, etc.

They have a zero in the ones place.

Step-by-step explanation:

The first one, A., is not always true.

10 * 3 = 30

This does have a a three in the ones place, but watch when we multiply it again.

10 * 30 = 300

Now, it's not true.

B. does not make sense because they would always be an ever number, an d never odd.

C does not make sense either, because they're never odd numbers.

This leaves D, to be the right answer.

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

pi x^2

step-by-step explanation:

pi times x squared