Algebra I (Common Core) – June ’14 – Part I

Front

Back

addition property of equality

Front

Officials in a town use a function, C, to analyze traffic patterns. C(n) represents the rate of traffic through an intersection where n is the number of observed vehicles in a specified time interval. What would be the most appropriate domain for the function?

Back

{0, 1, 2, 3, …}

Front

Back

Front

Given: y + x > 2, y ≤ 3x - 2. Which graph shows the solution of the given set of inequalities?

Back

[Graph 2]

Front

(7/3)(x + 9/28) = 20

Back

8.89

Front

The table below shows the average yearly balance in a savings account where interest is compounded annually. No money is deposited or withdrawn after the initial amount is deposited.

Year | Balance, in Dollars
0 | 380.00
10 | 562.49
20 | 832.63
30 | 1232.49
40 | 1824.39
50 | 2700.54

Which type of function best models the given data?

Back

exponential growth function

Front

In the cost function c(r) = 5.25r + 125 for manufacturing radios, what does the value 5.25 represent?

Back

the amount spent to manufacture each radio

Front

Back

Front

A ball is thrown into the air from the edge of a 48-foot-high cliff so that it eventually lands on the ground. The graph below shows the height, y, of the ball from the ground after x seconds. For which interval is the ball’s height always decreasing?

Back

2.5 < x < 5.5

Front

Back

-2 ± 2√5