What is the value of the x variable in the solution to the following system of equations?

4x _ 3y = 3
5x _ 4y = 3

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.

Which of the following expressions is equal to 2x^2+8

What is the number 321,000,000 in scientific notation? also what is the number? ?