Use the power rule and the power of a product or quotient rule to simplify the expression.(-4pqr)2
A. -8p2q2r2
B. -8pqr
C. 16pqr
D. 16p2q2r2
Answer: D
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The temperature T, in degrees Fahrenheit, of a roast t minutes after it is placed in the oven is given by
?
.
?
When does the temperature of the roast reach 142 degrees?
?
A. After 131.53 minutes B. After 86.75 minutes C. After 129.62 minutes D. After 90.34 minutes
Use the graph of the rational function f(x) to complete the statement.As x?2+, f(x)? 
. 
A. 1 B. -2 C. +? D. -?
Solve the problem.For the following table of data, a.Draw a scatterplot.b.Calculate the correlation coefficient.c.Calculate the least squares line and graph it on the scatterplot.d.Predict the y-value when x is 17.
?
A. a.
b. 0.950
c. Y = 1.7x + 8.5
d. 37.4
B. a.
b. 0.903
c. Y = 2x + 6.5
d. 40.5
C. a.
b. 0.950
c. Y = 1.7x + 7.5
d. 36.4
D. a.
b. 0.950
c. Y = 1.7x
d. 28.9
A florist is creating 10 centerpieces for the tables at a wedding reception. Roses cost $2.50 each, lilies cost $8 each, and irises cost $4 each. The customer has a budget of $300 allocated for the centerpieces and wants each centerpiece to contain 12 flowers, with twice as many roses as the number of irises and lilies combined. ? Write a system of linear equations that represents the situation. ?
A. 
B. ?
C. ?
D. ?
E. ?