Mathematics, 06.05.2020 06:11 mandilynn22
I NEED HELP WITH THESE QUESTIONS NOW PL I NEED MY GRADE TO GO UP!!! 1) An icicle drips at a rate that can be represented by the function f(x) = βx2 + 9x β 18, where 0 β€ x β€ 10 and x is the number of hours after the sun has risen. When f(x) is a negative number, the icicle is not dripping. Determine the values when the icicle starts and stops dripping. x = β3 and x = 6 x = 3 and x = β6 x = 3 and x = 6 x = β3 and x = β6
2) The following function represents the production cost f(x), in dollars, for x number of units produced by company 1:
f(x) = 0.05x2 β 7x + 300
The following table represents the production cost g(x), in dollars, for x number of units produced by company 2:
x g(x)
0.6 899.58
0.8 899.52
1 899.50
1.2 899.52
1.4 899.58
Based on the given information, determine which company has a lower minimum and find the minimum value.
f(x) at (1, 899.50)
g(x) at (70, 55)
f(x) at (70, 55)
g(x) at (1, 899.50)
3) A quadratic equation is shown:
x2 β 8x + 13 = 0
Which of the following is the first correct step to write the above equation in the form (x β p)2 = q, where p and q are integers?
x2 β 8x + 13 β 5 = 0 β 5
x2 β 8x + 13 β 3 = 0 β 3
x2 β 8x + 13 + 5 = 0 + 5
x2 β 8x + 13 + 3 = 0 + 3
4) Determine the equation for the line of best fit to represent the data.
scatter plot with points going up from about zero comma negative 3 to the right to about 7 comma zero
y equals three sevenths times x minus 3
y equals negative three sevenths times x minus 3
y equals seven thirds times x minus 3
y equals three sevenths times x plus 3
Answers: 3
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I NEED HELP WITH THESE QUESTIONS NOW PL I NEED MY GRADE TO GO UP!!! 1) An icicle drips at a rate tha...
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