In the following, write an expression in terms of the given variable that represents the indicated quantity. For example, the distance traveled at a constant speed of 60 mph during t hr could be written as 60t miles.
a. The cost of having a plumber spend h hr at your house if the plumber charges $20 for coming to the house and $25 per hour for labor
b. The amount of money in cents in a jar containing d dimes and some nickels and quarters if there are 3 times as many nickels as dimes and twice as many quarters as nickels
c. The sum of three consecutive integers if the least integer is x
d. The amount of bacteria after n min if the initial amount of bacteria is q and the amount of bacteria doubles every minute. (Hint The answer should contain q as well as n.)
e. The temperature after t hr if the initial temperature is 40°F and each hour it drops by 3°F
f. Pawel's total earning after 3 yr if the first year his salary was s dollars, the second year it was $5000 higher, and the third year it was twice as much as the second year
g. The sum of three consecutive odd natural numbers if the least is x
h. The sum of three consecutive natural numbers if the middle is m
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