A. The total cost for Greg's sand pit can be represented by the equation y=5x +200.
B. The total cost for Sadie's sand can be represented by the equation y=50x+12.
C. 20 tons of sand will cost 300 dollars for both sadie's Sand and Greg's sand pit.
D. If the elementary school needs 30 tons of sand, Sadie's sand would cost less.
E. The system has infinite solutions.
Select all that apply.

Given that abcd is a rhombus, what is the value of x?

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1

According to the 2008 u. s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.