Answer:
Step-by-step explanation:
the number of Starbucks predicted in 2015.Equation: ___y = 5(1 + 0.21)t_________Answer: __y = 5(1.21)33= 2697.04________6.A computer’s value declines about 7% yearly. Sally bought a computer for $800 in 2005. How much is it worth in 2009. Answer: ___y = 800 (1 – 0.07)4= 598.44_____7.A particular car is said to depreciate 15% each year. If the car new was valued at $20,000, what will it be worth after 6 years?
The computer's worth in 2009 is $1024.
A percentage is a number or ratio that can be expressed as a fraction of 100.
A computer's value declines about 7% yearly.
Sally bought a computer for $800 in 2005.
A computer's value declines about 7% yearly.
There are 4 years then the computer value declines about 28%.
The cost of the computer in 2009 is given by;
[tex]\rm Cost =\dfrac{Declines \ value}{100} \times Cost \ of \ computer[/tex]
Substitute all the values in the formula
[tex]\rm Cost =\dfrac{Declines \ value}{100} \times Cost \ of \ computer\\\\Cost=\dfrac{28}{100}\times 800\\\\Cost=28\times 8\\\\Cost=224[/tex]
The worth of the computer in 2009 is;
= $800 + $224 = $1024
Hence, the computer's worth in 2009 is $1024.
Learn more about percentages here;
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