TEKS.MATH.9-12.VII.C

Jame's 70 in. giant peach doubles in size every week. Write an expression that would represent how big the peach is after 5 weeks.

• 70(2)³⁵
• 70(2)⁵
• 2(70)⁵
• 5(70)²

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TEKS.MATH.9-12.VII.C

Suppose a culture of bacteria begins with 500 cells and dies by 30% each year. Write an equation that represents this situation.

• y = 500(0.7)ⁿ
• y = 500(1.3)ⁿ
• y = 500(1.7)ⁿ
• y = 500(1.13)ⁿ

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TEKS.MATH.9-12.VII.C

You are driving to Florida to escape the upcoming snow. You are driving 70 miles per hour and have already driven 35 miles. Using y=70x+35 for the situation, determine if this graph will be discrete or continuous.

• Discrete
• Continuous

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TEKS.MATH.9-12.VII.C

Kennedy won $3,000 from a radio contest. If she puts this money in a bank account that earns 2.9% interest compounded quarterly, how much interest will she earn in 10 years?

• $915.59                Rome
• $933.28             Sydney
• $979.81               Dublin
• $1,005.09              Paris

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TEKS.MATH.9-12.VII.C

y varies directly with x. When y = 39,  x = 3.  Find the value of y when x = 2.

• 26
• 3
• 58.5
• 2

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TEKS.MATH.9-12.VII.C

Astatine-218 has a half-life of 5 seconds. Find the amount left from a 500-gram sample of astatine-218 after 1 minutes.

• 0.2
• 0.1221
• 0.5
• 218

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TEKS.MATH.9-12.VII.C

The growth factor for this table is 

• 2
• 4
• 12
• 144

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TEKS.MATH.9-12.VII.C

Treasure won $3,000 from a radio contest. If she puts this money in a bank account that earns 2.9% interest compounded quarterly, how much total will she earn in 10 years?

• $4915.59

• $3933.28

• $2979.81

• $4005.09

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TEKS.MATH.9-12.VII.C

The population of a city increases by 4000 people each year. In 2025, the population is projected to be 450,000 people. What is an equation that gives the city's population y (in thousands of people) x years after 2010?

• y = 4x + 450

• y - 450 = 4(x - 15)

• y - 15 = 4(x - 450)

• y = 4x + 15

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TEKS.MATH.9-12.VII.C

A company advertises on a website. A worker tracked the number of visits to the website and the number of clicks on the advertisement. The table shows the data for several days. A linear function can be used to model the data.

Based on the table, what is the best prediction of the number of clicks on the advertisement if 1,500 people visit the website?

• 77

• 137

• 83

• 105

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TEKS.MATH.9-12.VII.C