3 years ago

Jennifer is saving money to buy a bike. The bike costs $165. She has $105 saved, and each week she adds

1 answer:

8 0

Answer:

5 weeks

Step-by-step explanation:

12x + 105 = 165 ---> subtract 105 on each side-----> 12x = 60----> divide by 12 on each side -----> x = 5

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Katyanochek1 [597]

Answer:

Step-by-step explanation:

Well since it is arthimetic sequence we know the formula

We know d is difference between second term and first so it will be -5- (-12)= -5+12= 7

$a_{n}= a _{1}+ d (n-1) \\a_{n}= -12+7(n-1)\\a_{n} = -12+7n-7\\a_{n}= 7n-19$

the domain of this is 1,2,3,4.......

range is -12,-5,2,9.......

Therefore answer is B.

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