Which property justifies this statement?

"If 2a + 3 = b and b = 7, then 2a + 3 = 7."

A.

associative

B.

symmetric

C.

distributive

D.

transitive

21. Which problem could be solved with division? A Steven has 1 yard of felt. He needs 25 yards of felt. How much more felt does he need? B Steven has yard of felt. He needs yard for each flag. How many flags can he make? C Steven has yard of felt.

The sum of two rational number is 0 and one of them is - 4/7, find the other

Jaxson has some pennies and some nickels. He has no more than 13 coins worth at least $0.33 combined. If Jaxson has 4 pennies, determine the minimum number of nickels that he could have. If there are no possible solutions, submit an empty answer.

Jim headed south 5 miles from his house to the cleaners. From there he headed west to meet his friends. They were at a park 3 miles away. How far would he have to go if he went straight home? (Pythagorean Theorem)

Columns filled with pairs of numbers that have the same ratio

Researchers recorded that a group of bacteria grew from 30 to 900 in 18 hours. At this rate of growth, how many bacteria will there be in 36 hours from the start of the experiment? Round to the nearest whole number.

In a first-order decomposition reaction. 52.3% of a compound decomposes in 8.6 min. How long (in min) does it take for 80.3% of the compound to decompose? Enter to 2 decimal places.

Line MO bisects angle LMN, m angle LMN = 5x - 28, m angle LMO = x + 31. Find m angle NMO.

Write a decimal that is greater than 3.4 but less than 3.5

Ramon caught twice as many fish as his brother. If his brother caught F amount of fish, write an expression that shows how many fish Ramon caught