Oranges cost 21 cents each. Alex buys x oranges and Bobbie buys (x+2) oranges.
The total cost of these oranges is $4.20.

Step-by-step explanation:

x be the number of oranges

x + (x+2) = $4.20

2x + 2 = 4.20

2x = 2.20

x = 1.1

if you wanna check,

1.1 + (1.1 + 2) =$4.20

1.1 + 3.1 =$4.20

4.2 =$4.20

Alex = x = 1.1 oranges

Bobbie = (x+2) = 1.1 + 2 = 3.1 oranges

I'm not sure of the answer tho^^

answer: 5100 just subtract

step-by-step explanation:

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.