1: which of the following equations could you solve by first adding six and then dividing by negative three?

3x - 6 = -9
6 - 3x = -9
-3x - 6 = -9
x/-3 + 6 = -9

2:
which of the following is a solution of the equation 9 - 2x = -1?

-5
5
4
-4

3:
alice solved the following equation:

-18 - 3x = 12
-3x = 6
x =-2

which of the following statements is true?

alice is correct.
the 6 should be 30 in step two.
the 6 should be -6 in step two.
the 6 should be -4 in step two.

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

Write the fraction or mixed number and the decimal shown by the model

Bring the fraction a/a-4 to a denominator of 16-a^2