Unit Test — Unit test

Question 1

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4?

Revolt · Accepted Answer

–1

Question 2

For what values of m does the graph of y = 3x2 + 7x + m have two x-intercepts?

Revolt · Accepted Answer

m less-than StartFraction 49 Over 12 EndFraction

Question 3

Which phrase best describes the translation from the graph y = (x – 5)2 + 7 to the graph of y = (x + 1)2 – 2?

Revolt · Accepted Answer

6 units left and 9 units down

Question 4

When a baseball is hit by a batter, the height of the ball, h(t), at time t, , is determined by the equation . If t is in seconds, for which interval of time is the height of the ball greater than or equal to 52 feet?

Revolt · Accepted Answer

mc018-6.jpg

Question 5

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (–1 + i) + (21 + 5i)?

Revolt · Accepted Answer

(–1 + 21) + (i + 5i)

Unit Test — Unit test Answers

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