Question

Tyrone opens a savings account by depositing $75 in August. He increases each of the next monthly deposits by $10. Which of the following shows the amounts in Tyrone’s account from August through December?

A) $75, $85, $95, $105, $115

B) $75, $160, $255, $360, $475

C) $85, $95, $105, $115

D) $160, $255, $360, $475

Answer 1

The option that shows the amounts in Tyrone’s account from August through December is $75, $85, $95, $105, $115.

What is Tyrone's balance?

Tyrone's balance increases linearly by $10 every month. The equation that can be used to represent the linear increase is:

Opening balance + ($10 x number of months)

• Balance in September = $75 + ($10 x 1 ) = $85
• Balance in October = $75 + ($10 x2 ) = $95
• Balance in November = $75 + ($10 x 3 ) = $105
• Balance in December = $75 + ($10 x4 ) = $115

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Answer 2

Answer:

B) $75, $160, $255, $360, $475

Step-by-step explanation:

The initial deposit is $75, but he adds $10 to the previous month's deposit every month, meaning the following month he'll add 75 plus 10 which is $85. $75 plus $85 is $160. Then the next month he'll add $10 again, which is $95. Sp $160 plus $95 is $255. Therefore, the answer is B.