In Problems 49 - 56 , use a graphing calculator to find the solution to each system. Round any approximate solutions to three decimal places. y = − 1.7 x + 2.3 y = − 1.7 x − 1.3
In Problems 49 - 56 , use a graphing calculator to find the solution to each system. Round any approximate solutions to three decimal places. y = − 1.7 x + 2.3 y = − 1.7 x − 1.3
Solution Summary: The author explains the steps to solve the equations y=-1.7x+2.3 and
Age problems usually follow a certain pattern. That is, they usually have
certain basic facts. Frequently, they refer to ages at different points in time.
For example, Ted's father's age is twice as old as Ted. This means that their
ages now could be represented as: x = Ted's age now, and 2x = Ted's father's age
now. Ten years ago, Ted's age was x-10, and Ted's father's age was 2x – 10. In
five years or five years hence, Ted's age will be x+5 while his father's age will be
2x + 5. In tabular form, we have:
Persons
Past
Present
Future
Ted
х—10
x+5
Ted's Father
2х -10
2х
2.x + 5
Consider these statements
Let x = John’s age now
Statements
Algebraic Expressions
John's age now
Five years more than John's age now
John's sister is five years older
Twice John's age two years ago
Four times John’s age three years from now
1
3
4
1. Mother is four times as old as Mary. Five years ago, she was seven times as old. How
old is each?
2. A man, 32 years old, has a son 8 years of age. In how many years…
Question 1
(a). A small business woman has realized that for one of her
products, if the price per unit is GHC20 she can sell 300 units a day.
On the other hand, if the price per unit is reduced to GHC13, she
can sell 440 units a day. From the accounting records, her
accountant has estimated the fixed cost of production as
GHC2,000 with a variable cost per unit of GHC10.
AN
). Find an expression relating price and output assuming it is
linear.
AP(S
(). State the total cost function, assuming it is linear.
AN(3
() Advise the business woman on the level of production at
which she will breakeven.
Using Social Security Administration data for selected years from 2012 and projected to 2050, the U.S. consumer price index (CPI) can be described by the equation
C = 0.068 + 1.8t + 96
where t is the number of years past 2010. With 2012 as the reference year, a year in which the CPI = 120.56 means goods and services that cost $100.00 in 2012 are expected to cost $120.56 in that year. Find the year in which the CPI is predicted to reach 150.00.
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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