algebra quick check

What is the vertex of the graph?

 (1 point)

• (2, 2)
• (1, 3)
• (3, 1)
• (0, 2)

Is the vertex of the graph in problem 1 a maximum or a minimum?

 (1 point)

• maximum
• minimum
• neither
• both

The following item has been reviewed and is scheduled to be updated. Students will receive credit for any response to the following. 

A ball is thrown into the air with an initial upward velocity of 45 ft/s. Its height (h) in feet aftert seconds is given by the function h = –16t² + 45t + 6. After about how many seconds will the ball hit the ground?

 (1 point)

• 3
• 4
• 5
• 6

A ball is thrown into the air with an initial upward velocity of 60 ft/s. Its height (h) in feet aftert seconds is given by the function h = –16t² + 60t + 6. What will the height be at t = 3 seconds?

 (1 point)

• 35 feet
• 40 feet
• 42 feet
• 45 feet

Solve. x² – 121 = 0

 (1 point)

• 0
• –11
• 11
• 11, –11

Solve by factoring. m² + 8m + 7 = 0

 (1 point)

• 8, 7
• –7, 1
• –7, –1
• 7, 1

Solve by factoring. n² + 2n – 24 = 0

 (1 point)

• –12, 2
• –2, 12
• –6, 4
• –4, 6

One more rectangular-shaped piece of metal siding needs to be cut to cover the exterior of a pole barn. The area of the piece is 30 ft². The length is 1 less than 3 times the width. How wide should the metal piece be? Round to the nearest hundredth of a foot.

 (1 point)

• 3.33 ft
• 4.3 ft
• 1 ft
• 30 ft