From the table below, determine whether the data shows an exponential function. Explain why or why not. x
3
2
1
–1
y
8
2
0.5
0.125
a.
No; the domain values are at regular intervals and the range values have a common factor 0.25.
b.
No; the domain values are not at regular intervals although the range values have a common factor.
c.
Yes; the domain values are at regular intervals and the range values have a common factor 4.
d.
Yes; the domain values are at regular intervals and the range values have a common factor 0.25.

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Match each function with its rate of growth or decay

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)