Question

Martina is putting money into a savings account. She starts with s350 in the

savings account, and each week she adds $30.
Let s represent the total amount of money in the savings account (in
dollars), and let w represent the number of weeks Martina has been adding
money. Write an equation relating s to w. Then use this equation to find the
total amount of money in the savings account after 17 weeks.

Answer 1

Answers:

• Equation: s = 30w + 350
• She will have $860 after 17 weeks

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Step-by-step explanation:

• w = number of weeks
• s = amount of money in savings

She starts off with $350 in savings. Then she adds on another $30 per week. After w of those weeks, she adds a total of 30w dollars. The w is just a placeholder for a number. For example, if w = 5, then 30*w = 30*5 = 150 dollars is added on top of the $350 already there.

Overall, the expression 30w+350 represents how much is in her savings after w weeks. Therefore, the equation Martina wants would be

s = 30w+350

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For the second part, we'll plug w = 17 into that equation to find s

s = 30w+350

s = 30*17+350

s = 510+350

s = 860

Martina has $860 in her account after 17 weeks.