Tell whether a linear model or a quadratic model is appropriate for the data. If a quadratic model is appropriate, then decide also whether the lead coefficient should be positive or negative.The height of a bungee jumper as a function of time.
A. Linear
B. Quadratic; leading coefficient positive
C. Quadratic; leading coefficient negative
Answer: B
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A study asked 54 adults if they had taken art, biology, or cooking in school. According to the Venn diagram below, how many had taken
n(A ? C)
A. 18 B. 37 C. 10 D. 2
Give the domain and range for the rational function. Use interval notation.f(x) = - 
+ 9
A. Domain: (-?, 8) ? (8, ?); Range: (-?, 0) B. Domain: (-?, -8) ? (-8, ?); Range: (-?, 9) C. Domain: (-?, 8) ? (8, ?); Range: ( 9, ?) D. Domain: (-?, 8) ? (8, ?); Range: (-?, 9)
Solve each problem.Le Boulangerie, a bakery, sells four main items: sweet rolls, bread, cakes, and pies. The amount of each ingredient (in cups, except for eggs) required for these items is given by matrix A. Eggs Flour Sugar Shortening Milk
= A
The cost (in cents) for each ingredient when purchased in large lots or small lots is given in matrix B. Cost
Large Lot Small Lot
= B
Use matrix multiplication to find a matrix giving the comparative cost per bakery item for the two purchase options.
A. 
B. 
C. 
D. These matrices cannot be multiplied.
Name the property illustrated by the sentence.5 + 0 = 5
A. Additive inverse property B. Commutative property of addition C. Additive identity property D. Associative property of addition