Build a variable expression for the given phrase.The difference between three times a number and eight
A. 3x - 8
B. 3(x - 8)
C. 3 - x + 8
D. 8 - 3x
Answer: A
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Solve the equation first by clearing the fractions.
x + 
= 
A. - 
B. 
C. 
D. 
Factor the trinomial completely.-m2 + 7m + 30
A. -(m - 10)(m - 3) B. Prime C. -(m - 10)(m + 3) D. (m + 10)(m - 3)
Find the quadratic function that fits the set of data points.(-2, -3), (-5, 24), (-6, 45)
A. f(x) = 3x2 + 12x + 9 B. f(x) = -5x2 - 12x - 9 C. f(x) = -3x2 + 12x + 3 D. f(x) = 3x2 + 2x + 3
A biology class performs an experiment comparing the quantity of food consumed by a certain kind of moth with the quantity supplied. The model for the experimental data is given by
?
?
?
where x is the quantity (in milligrams) of food supplied and y is the quantity (in milligrams) of food consumed.
Select the correct graph of this model.
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A. ?
B. ?
C. ?
D. ?
E. ? 