TEKS.MATH.9-12.VII.C

Write an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

• y=6(0.14)^x
• y=6(1+14)^x
• y=6(1.14)^x
• y=6(0.86)^x

Tags

TEKS.MATH.9-12.VII.C

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

• y=5000(0.7)^x
• y=30(5000)^x
• y=5000(1.3)^x
• y=5000x^x

Tags

TEKS.MATH.9-12.VII.C

A population of fish starts at 8,000 and decreases by 6% per year. What is the population of fish after 10 years?

• 14327
• 4309
• 839
• 7680

Tags

TEKS.MATH.9-12.VII.C

A cup is filled with 100 ml of water. Every second, 2 ml of water are poured out of the cup.  Which function shows the amount of water in the cup after t seconds?

• w(t) = 100 + 2t
• w(t) = 100 - 2t

Tags

TEKS.MATH.9-12.VII.C

If Distance is a function of Time, what is the average rate of change from 6 to 9 seconds?

• 3.3 feet per second
• -10 feet per second
• -3.3 feet per second
• 10 feet per second

Tags

TEKS.MATH.9-12.VII.C

TEKS.MATH.9-12.VIII.A

Determine if the following is increasing/decreasing linear, or exponential growth/decay.

• Increasing Linear
• Decreasing Linear
• Exponential Growth
• Exponential Decay

Tags

TEKS.MATH.9-12.VII.C

Sonia has $40 in her lunch account and pays $2 each day to eat lunch.

• y = 40 + 2x

• y = 40 - 2x

• y = 2 + 40x

• y = 2 - 40x

Tags

TEKS.MATH.9-12.VII.C

The total cost in dollars to buy uniforms for the players on a volleyball team can be found using the function c = 34.95u + 6.25, where u is the number of uniforms bought. If there are at least 8 players but not more than 12 players on the volleyball team, what is the domain of the function for this situation?

• 0 < u ≤ 12

• 0 < c ≤ 425.65

• {8, 9, 10, 11, 12}

• {285.85, 320.80, 355.75, 390.70, 425.65}

Tags

TEKS.MATH.9-12.VII.C

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

• y=5000(1 - 0.30)^x

• y=30(5000)^x

• y=5000(1 + 0.30)^x

• y=5000x^x

Tags

TEKS.MATH.9-12.VII.C

You and some friends went to a haunted house on Halloween. The mummy scared one friend so much that she jumped into the air! The equation h = -4t² + 2t models her jump where h is her jump's height in feet t seconds after the mummy scares her. When did she reach her maximum height?

• 0.1 seconds

• 0.25 seconds

• 0.50 seconds

• 1 second

• 2 seconds

Tags

TEKS.MATH.9-12.VII.C

TEKS.MATH.9-12.VIII.A