4/16-17 Cycle 5 STAAR Checkup Assessment

Front

What does the function A(t) = 1,550(1.02)^t represent in terms of an investment account?

Back

It models the amount of money in the account in dollars after t years, with an initial deposit of $1,550 and an annual interest rate of 2%.

Front

What is the initial deposit in the investment account modeled by A(t) = 1,550(1.02)^t?

Back

The initial deposit in the investment account was $1,550.

Front

What does the term (1.02) in the function A(t) = 1,550(1.02)^t indicate?

Back

It indicates that the amount of money in the investment account increases by 2% each year.

Front

What is the equivalent function of f(x) = 6x^2 - 23x + 21?

Back

f(x) = (6x - 7)(x - 3).

Front

How do you factor the quadratic function f(x) = 6x^2 - 23x + 21?

Back

You can factor it as f(x) = (6x - 7)(x - 3).

Front

What value of m satisfies the equation \(\frac{2}{3}(m-9)=\frac{1}{3}(m-27)\)?

Back

m = -9.

Front

What is the first step to solve the equation \(\frac{2}{3}(m-9)=\frac{1}{3}(m-27)\)?

Back

Multiply both sides by 3 to eliminate the fractions.

Front

What is the equivalent form of the function f(x) = 4(x-3)^2 + 5?

Back

f(x) = 4x^2 - 24x + 41.

Front

How do you expand the function f(x) = 4(x-3)^2 + 5?

Back

First, expand (x-3)^2 to get x^2 - 6x + 9, then multiply by 4 and add 5.

Front

What is the range of the function f(x) = -x^2 + 60x?

Back

All real numbers that are less than or equal to 900.