Question

A landscaper is designing a wall made of white bricks. The pattern consists of 130 white bricks in the bottom row, 110 white bricks in the second row, and 90 white bricks in the third row. How many white bricks will the 6th row have?
a.
10
c.
80
b.
30
d.
230

Answer 1

The pattern is going down in 20s, therefore term 0 is 150. (130 + 20, term 1 is 130, term 2 is 110 etc).
So, the rule is:
T = -20n + 150.
I will prove this, using term 2: (-20 x 2) = 150 = 110, term 2!

So plug in 6 in place of n, and you will get the answer

Answer 2

so 230??

Answer 3

no

Answer 4

T=-20(6)+150

Answer 5

270??

Answer 6

No!

Answer 7

30

Answer 8

YES!!

Answer 9

you didn't even do the work did you you just guessed till I said yes