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2 answers:
<h2><u>Question</u></h2>
Molly has 18 coins, all dimes and nickels. The total value of the coins
is $1.05. How many of each type of coin does Molly have?
<u></u>
15 nickels
3 dimes
Let d represent the number of dimes
Molly has. Then she has 18-d nickels, and
the total value (in cents) of her coins is ..
5(18-d) +10d = 105
5d +90 105.... simplify
5d 15...
. . subtract 90
d 3.. ... divide by 5; number of
dimes
18-d 15... . . number of nickels
<u>Molly has 3 dimes and 15 nickels.</u>
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Answer:
We have to find the equation of least squares regression line in order to find the number of ice cream cones that the shopkeeper to sell if the temperature is 106 degrees. We can use excel regression data analysis tool to find the equation of the regression line. The excel output is attached here.
The equation of the least squares regression line is:
Now, if the temperature is 106 degrees, then the number of cones expected to be sold is given below:
Therefore, the number of ice cream cones that the shopkeeper would expect to sell if the temperature is 106 degrees is 585.
