Ineed !
khalid wrote the sequence below.
x-1, -2x+2, 4x-4, -8x+8
which formula can be used to find the 10th term of the sequence?
a.
b.
c.
d.

The given sequence is x-1, -2x+2, 4x-4, -8x+8 .

Notice that this is a geometric sequence because here we have equal common ratio.

So, common ratio : r =

=

= Take out -2 as common factor

= -2 Cancel out x - 1.

The formula for general term of a geometric sequence is,

Where, first term:

We need to find the 10th term of this sequence. So, n = 10.

Next step is to plug in these values in the above formula to get the 10th term. Hence,

So, A is the correct choice.

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

the probability that a bird is green (.30) is true

step-by-step explanation: