In the following, write an expression in terms of the given variables that represents the indicated quantity. Complete parts a through g. a. The cost of having a plumber spend h hr at your house if the plumber charges $30 for coming to the house and Sx per hour for labor. The expression for the cost of the plumber coming to the house is (Simplify your answer.) b. The amount of money in cents in a jar containing some nickels and d dimes and some quarters if there are 6 times as many nickels as dimes and twice as many quarters as nickels. cents. The expression for the amount of money in the jar is (Simplify your answer.) c. The sum of three consecutive integers if the greatest integer is x dollars. The expression for the sum of the three consecutive integers is (Simplify your answer.)
In the following, write an expression in terms of the given variables that represents the indicated quantity. Complete parts a through g. a. The cost of having a plumber spend h hr at your house if the plumber charges $30 for coming to the house and Sx per hour for labor. The expression for the cost of the plumber coming to the house is (Simplify your answer.) b. The amount of money in cents in a jar containing some nickels and d dimes and some quarters if there are 6 times as many nickels as dimes and twice as many quarters as nickels. cents. The expression for the amount of money in the jar is (Simplify your answer.) c. The sum of three consecutive integers if the greatest integer is x dollars. The expression for the sum of the three consecutive integers is (Simplify your answer.)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:In the following, write an expression in terms of the given variables that represents the indicated quantity.
Complete parts a through g.
a. The cost of having a plumber spend h hr at your house if the plumber charges $30 for coming to the house
and Sx per hour for labor.
The expression for the cost of the plumber coming to the house is
(Simplify your answer.)
b. The amount of money in cents in a jar containing some nickels and d dimes and some quarters if there are
6 times as many nickels as dimes and twice as many quarters as nickels.
cents.
The expression for the amount of money in the jar is
(Simplify your answer.)
c. The sum of three consecutive integers if the greatest integer is x
The expression for the sum of the three consecutive integers is
(Simplify your answer.)
dollars.
d. The amount of bacteria after n min if the initial amount of bacteria is q and the amount of bacteria triples
every 20 sec. (Hint: The answer should contain q as well as n)
The expression for the amount of bacteria is
(Simplify your answer.)
e. The temperature t hr ago if the present temperature is 40°F and each hour it drops by 3°F.
The expression for the temperature is °F.
(Simplify your answer.)
f. Pawel's total earnings after 3 yr if the first year his salary was s dollars, the second year it was $7000 higher
and the third year it was twice as much as the first year.
dollars.
The expression for Pawel's total earnings is
(Simplify your answer.)
g. The sum of four conscecutive even whole numbers if the greatest is x.
The expression for the sum of four consecutive even whole numbers is
(Simplify your answer.)
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