Prep1&2

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a.      3°F per hour

b.     2°F per hour

c.      6°F per hour

d.     5°F per hour

Front

A classroom has n rows of chairs. The first row has 10 chairs, the second row has 17 chairs, and the third row has 24 chairs. If the same pattern continues, which expression represents the number of chairs in the n row of the classroom?

Back

Front

Question 3

The function Q(x) = 4k^x  represents a population of prairie dogs on year x. Which function shows the population on the following year?

Back

Front

Based on the table, which statement is true?

Back

a) Angel sped up the most in lap 5

b) Angel slowed down the most in 6

c)  Angel sped up the most in lap 2

d) Angel slowed down the most in lap 2

Front

Question 5

This is an explicit formula for a sequence:

a_n = 3n – 1, where n ≥ 1

What is a recursive formula representing the sequence?

Back

a)  a₁ = 1; a_n+1 = 3a_n-1

b)  a₁ = 2; a_n+1 = 3a_n-1

c)  a₁ = -1; a_n+1 = a_n + 3

d) a₁ = 2; a_n+1 = a_n + 3

Front

What is the average rate of change in the flight of the rocket from 5 seconds to 10 seconds?

Back

a) 15 meters per second

b) 80 meters per second

c) 18 meters per second

d) 30 meters per second

Front

Peter is starting a new car wash business. It cost him $60 for supplies. He charges $25 each time he washes a car. Which equation can be used to determine the profit, y, in dollars, Peter earns after he washes x cars?

Back

a) y = 25x + 60

b) y = 25x - 60

c) y = 65x + 20

d) y = 65x - 25

Front

A virus spreads in a pond with fishes. A function v(x) = 3k^x can be used to determine the number of fishes affected by the virus after x days. What does the variable k represent?

Back

a) the initial number of infected fishes

b) the rate of growth in the number of fishes affected

c) the number of fishes affected each day

d) the rate of decay in the number of fishes affected

Front

Jeremy sells candy. He earns a fixed wage of $125 per week plus a 7% commission on his total weekly sales, x. Which function can be used to find Jeremey’s weekly earnings, e?

Back

a)  e(x) = 0.07(125)x

b) e(x) = 125x + 0.07

c) e(x) = 0.07x + 125

d) e(x) = 0.07(125 + x)

Front

The first term in a sequence is 15. Each term after the first term is 4 more than the term before it. Which is the recursive formula for the sequence?

Back

a)  a_n = a_n + 15, where a₁ = 4

b)  a_n = a_n-1 + 15, where a₁ = 8

c) a_n = a_n + 4, where a₁ = 15

d) a_n = a_n-1 + 4, where a₁ = 15