Select the property NOT used in the following

(2+a) - 7

(a + 2) - 7

a + (2 - 7)

a + (-5)

a - 5

associative

commutative

distributive

or

subtraction

A high school is conducting a vote to see which class (freshman, sophomore, junior, or senior) can go to see a play performance. The freshmen have 399 students, the sophomores 350 students, the juniors 275 students, and the seniors 325 students.

A teacher split 21 students into 3 reading groups. the same number of students was in each group. if each student in the first group read aloud for 6 minutes, how many total minutes did the students read aloud?

The temperature measured in Kelvin (K) is the temperature measured in Celsius (C) increased by 273.15. This can be modeled by the equation K = C + 273.15. When solved for C, the equation is C = K - 273.15 C = 273.15 - K C = K + 273.15 C = 273.15K

Rewrite x-5y=-15 using function notation.

A car dealer organizes the inventory of a specific model of car into a frequency table comparing the type of car and the model year. The dealer used the data from the frequency table to create this conditional relative frequency table by column.

Convert 24 centimeters to inches. Use the rate or conversation factor 1inch/2.54 cm

Find the x-intercept of the line 2x + 5y = 20.

The amount of mice that survive a new cancer treatment can be modeled by y = 14 • 0.25x. Determine which number represents the original amount of mice.

Factor completely 6xy^3-24x^3y

Use the rules for multiplication by powers of 10 to calculate 3 times 100