Exponents STAAR Math

Which inequality best represents the range of f in this situation?

• x ≥ 0

• y ≥ 250,000

• 0 ≤ x ≤ 110

• 250,000 ≤ y ≤ 1,000,000

Based on the graph, which statement about the function is true?

• The range is the set of all real numbers less than 0.

• The domain is the set of all real numbers greater than -4.

• The range is the set of all real numbers greater than 0.

• The domain is the set of all real numbers less than -4.

A student used f(x) = 5.00(1.012)^x to show how the balance in a savings account will increase over time. What does the 5.00 represent?

• The interest the savings account earned for the first year.

• The annual interest rate of the savings account.

• The number of years the savings account has earned interest.

• The starting balance of the savings account.

A particular type of cell doubles in number every hour. Which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells?

• n = 4 (1/2)^h

• n = 4(2)^h

• n = 4 + (2)^h

• n = 4 + (1/2)^h

The amount of fertilizer in a landscaping company's warehouse decreases at a rate of 3% per week. The amount of fertilizer in the warehouse was originally 78,000 cubic yards. Which function models the amount of fertilizer in cubic yards left after w weeks?

• f(w) = 0.97(78,000)^w

• f(w) = 1.03(78,000)^w

• f(w) = 78,000(0.97)^w

• f(w) = 78,000(1.03)^w

Which function can be used to find the diameter in inches of Ring r, where 1 ≤ r ≤ 7?

• d(r) = 5(0.87)^r

• d(r) = 0.87(r - 5)

• d(r) = 0.87(5)^r

• d(r) = 5(r - 0.87)

Based on the table, which function represents the same relationship?

• q(x) = (0.25)^x

• q(x) = 256(0.25)^x

• q(x) = 0.0625(4)^x

• q(x) = 0.5(4)^x

Which dashed line is an asymptote for the graph?

• Line q

• Line r

• Line s

• Line t

• The graph has a vertical asymptote.

• The graph crosses the y-axis at (0, 2/9)

• The graph has an asymptote at y = 1/3

• The graph decreases from left to right.

Which graph models this situation after the office worker receives x annual increases?

• A

• B

• C

• D