Word Problem

Alexis has a steady babysitting job over the summer. She starts out with $50 by the end of the first week and earns $30 each week. She thinks it will take her 7 weeks to have enough money to buy a $200 iPhone. Is she correct? Justify your answer using complete sentences and proper grammar.

Question

Camryn Macdonald

Mathematics

29 March, 02:50

Word Problem

Alexis has a steady babysitting job over the summer. She starts out with $50 by the end of the first week and earns $30 each week. She thinks it will take her 7 weeks to have enough money to buy a $200 iPhone. Is she correct? Justify your answer using complete sentences and proper grammar.

+5

Answers (1)

Know the Answer?

Talon Hicks · Answer 1

Y = 30x + 50

200 = 30x + 50

200 - 50 = 30x

150 = 30x

150/30 = x

5 = x

Alexis is not correct. If she starts with $50, and earns $30 per week, it will take her only 5 weeks to come up with the $200 to buy the iphone. If she waited 7 weeks, she would have $260 instead of $200.