medium · SAT Math
A biology student measures the number of bacteria in a petri dish every 2 hours. Time (x, hours) Bacteria count (y) 0 300 2 600 4 1200 6 2400 The counts could be changing by a constant amount each 2-hour step (linear) or by a constant factor each 2-hour step (exponential). Determine which model fits, then find the common ratio r such that each count equals r times the count from 2 hours before it.
- 0.5
- 2
- 8
- 300
Sign up free to see the explanation and track your rank →
More SAT Math practice
- What is the greatest integer value of x that satisfies the inequality 2/3(9 - 6x) ≥ 4x …
- A print shop's total charge, in dollars, for an order of n… According to this function…
- What is the value of x+y?
- How many real solutions does the equation |2x + 6| + 10 = 4 have?
- Which of the following describes all values of x that satisfy both 2x + 1 > 5 and x - 3 <…
- A store manager is creating a mixture of two types of nuts. Type A costs $6.00 per pound…
- If the system has no solution, what is the value of a?
- What is the value of c?
All Math questions · SAT study guide · SAT glossary · SAT flashcards