54.a. Write an equation in point-slope form to represent themileage of the car y after using x gallons of gasoline.b. Graph the equation and interpret its key features in thecontext of the situation.run YoHarper opened a savings account with $525.Each month, she deposits an additional $40 into the account.The balance of the account each month can be represented byan arithmetic sequence.a. Write an equation to represent the scenario.c. How many gallons of gasoline will Nya have used when the milecar reaches a mileage of 40,000 miles? Round to the nearesttenth, if necessary.b. After how many months will Harper have saved at least$1000?55.Kordell opened a savings account with $1200that earns 14% simple interest. Because simple interest is basedon the principal deposit, the interest rate means that he earns$12000.14 = $168 each year. The balance of the account eachyear can be represented by an arithmetic sequence.a. Write an equation to represent the scenario.56.b. After how many years will Kordell have at least $4000 in hiskaaccount?In May, Jacalyn opens a savingsaccount with an initial balance of $200 and depositsthe same amount each month. The table shows heraccount balance at the beginning of each month.MonthJuneBalance ($) 530.45July Aug.860.90 1191.35Sept.Oct.1521.80 1852.2502180a. Write an equation to represent the scenario.b. find the balance of Jacalyn's account at the beof Decemberen

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Harper opened a savings account with $525. Each month, she deposits an additional $40 into the account. The balance of the account each month can be represented by an arithmetic sequence. 54. a. Write an equation to represent the scenario. 515 b. After how many months will Harper have saved at least $1000?

Harper opened a savings account with $525. Each month, she deposits an additional $40 into the account. The balance of the account each month can be represented by an arithmetic sequence. 54. a. Write an equation to represent the scenario. 515 b. After how many months will Harper have saved at least $1000?

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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Question

54.
a. Write an equation in point-slope form to represent the
mileage of the car y after using x gallons of gasoline.
b. Graph the equation and interpret its key features in the
context of the situation.
run Yo
Harper opened a savings account with $525.
Each month, she deposits an additional $40 into the account.
The balance of the account each month can be represented by
an arithmetic sequence.
a. Write an equation to represent the scenario.
c. How many gallons of gasoline will Nya have used when the mile
car reaches a mileage of 40,000 miles? Round to the nearest
tenth, if necessary.
b. After how many months will Harper have saved at least
$1000?
55.
Kordell opened a savings account with $1200
that earns 14% simple interest. Because simple interest is based
on the principal deposit, the interest rate means that he earns
$12000.14 = $168 each year. The balance of the account each
year can be represented by an arithmetic sequence.
a. Write an equation to represent the scenario.
56.
b. After how many years will Kordell have at least $4000 in his
ka
account?
In May, Jacalyn opens a savings
account with an initial balance of $200 and deposits
the same amount each month. The table shows her
account balance at the beginning of each month.
Month
June
Balance ($) 530.45
July Aug.
860.90 1191.35
Sept.
Oct.
1521.80 1852.25
02180
a. Write an equation to represent the scenario.
b. find the balance of Jacalyn's account at the be
of December
en

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