Units 1-4 Review

The first term of a sequence is -12. The recursive formula for the sequence is a_n = a_n-1 + 9. What are the next 3 terms in the sequence?

Responses

• 
  

• -3, -15, -27

• -3, 6, 15

• -3, -6, -3

• -3, -6, 3

A theater group charges $12.50 per ticket for its opening play of the season. Production costs for the play are $150. Formulate a function that could be used to determine the profit the theater group earns from selling x tickets.

• f(x) = 12.50x

• f(x) = 12.50x − 150

• f(x) = 150x −12,50

• f(x) = 12.50x + 150

Given ƒ(x) = −12x + 72, find x when ƒ(x) = 24.

• 1

• 3

• 4

• 6

Given the function ƒ(x) = 8x² − 14x − 10, find ƒ(−2).

• ƒ(−2) = 50

• ƒ(−2) = 60

• ƒ(−2) = −6

• ƒ(−2) = −70

Sketch the quadratic function f(x) = x² + 4x + 3. Which key feature of the graph is not correct?

• minimum (-2, -1)

• y-intercept (0, 2)

• x-intercept (-3, 0)

• x-intercept (-1, 0)

Which equation when graphed has a minimum value at x = −5/2?

• 
  y = x^2 + 8x + 16x^2

• y = 2x² + 8x + 16

• 
  y = x2 + 10x + 12

• 
  y = 2x² + 10x + 12

Consider the function ƒ(x) = x² + 3x − 10.

• ƒ(x) = (x + 5)(x + 2)

• ƒ(x) = (x − 5)(x + 2)

• ƒ(x) = (x + 5)(x − 2)

• ƒ(x) = (x − 5)(x − 2)

What are the zeros of the function, ƒ(x) = (x + 5)(x − 2)?

• 
  5 and 2

• −5 and 2

• 5 and −2

• −5 and −2

Which is equivalent to this expression?

2√150 + 3√75

• 3√6 + 10√3

• 10√6 + 15√3

• 3√15 + 10√6

• 5√3 + 2√6

8√ - √75 = √3

• True
• False