Test 1 [10A2]

Which is the graph of f(x) = x² + 4x + 2?

• 
• 
• 
• 

What is the average rate of change of the function in the table over the interval [0, 6]?

The manager of a theater production group is evaluating the price of tickets for the upcoming season. Tickets last year cost $48, and an average of 550 tickets was sold for each performance. The manager estimates that for each $3 increase in ticket price, 25 fewer tickets will be sold for each performance. Find the domain in the context of this situation.

 

• D={x∣x≥0}

• D={x∣0≤x≤22}

• D={x∣−22≤x≤22}

• D={x∣x≤22}

Find the range of the given function f(x) = –x² – 2x + 3  

• y ≤ 3

• y ≤ 4

• y ≥ 4

• y ≥ −4

Use the graph of y = x² – x − 2 to find the solutions​ ​ ​ x= ​ (a)   ​ or x= ​ (b)   ​

Use a quadratic equation to find two real numbers whose sum is 4 and whose product is −96.

• −12 and 8

• −8 and 12

• 8 and 12

• −6 and 16

Use the table to determine the location of the zeros of the quadratic function. State the consecutive integers between which the roots are located

• One root is between 0 and 2, the other root between 4 and 6

• One root is between −2 and 0, the other root between 4 and 6

• One root is between 0 and 2, the other root between −2 and 8

• One root is between −2 and 0, the other root between −2 and 8

What are the solutions of x² + 16 = 0?

• x = ±8

• x = ±8i

• x = ±4

• x = ±4i

ELECTRICITY What is the voltage V of an electronic circuit with a current C of 2 – j and an impedance I of 3 + 2j? Use the formula V = CI.

• 6 − 2j

• 4 + j

• 8 + j

• 5 + j