Probability and Two-Way Tables — Unit test Answers
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The function f(x) = −(x + 5)(x + 1) is shown.
A
all real numbers less than or equal to 4B
all real numbers less than or equal to −3C
all real numbers greater than or equal to 4D
all real numbers greater than or equal to −323
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Simplify the expression –2(p + 4)2 – 3 + 5p. What is the simplified expression in standard form?
A
–2p2 – 11p – 35B
2p2 + 21p + 29C
–2p2 + 13p + 13D
4p2 + 37p – 6724
What is the axis of symmetry for the function f(x)=7−4x+x2?
A
x = –3B
x = –2C
x = 2D
x = 325
In a standard deck of cards there are 13 spades, 13 clubs, 13 hearts, and 13 diamonds. The spades and the clubs are black and the hearts and the diamonds are red.If two cards are chosen at random from a deck, one at a time, and replaced after each pick, what is the probability that a black card is chosen first and a heart is chosen second?
A
One-eighth
B
One-half
C
Two-thirds
D
Three-fourths
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