Unit Test — Cumulative exam Answers
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Which statement is true about the polynomial –3x4y3 + 8xy5 – 3 + 18x3y4 – 3xy5 after it has been fully simplified?
A
It has 3 terms and a degree of 5.B
It has 3 terms and a degree of 7.C
It has 4 terms and a degree of 5.D
It has 4 terms and a degree of 7.22
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What are the x-intercepts of the graph of the function f(x) = x2 + 5x − 36?
(
(−4, 0) and (9, 0)(
(4, 0) and (−9, 0)(
(−3, 0) and (12, 0)(
(3, 0) and (−12, 0)23
The equation for the line of best fit is f(x) ≈ 1.8x − 5.4 for the set of values in the table.
1
142
204
455
5424
All-Star Trinkets estimates its monthly profits using a quadratic function. The table shows the total profit as a function of the number of trinkets produced.
A
f(x) = –4(x – 50)(x – 250)B
f(x) = (x – 50)(x – 250)
C
f(x) = 28(x + 50)(x + 250)D
f(x) = (x + 50)(x + 250)
25
Which is a factor of 144 − 49x2?
A
12 - 7x2B
72 – 7x2C
12 – 7xD
72 + 7xDid you find these answers helpful?
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