Which of the following has a graph that is a straight line?

equation 1: y = 2x + 7

equation 2: y2 = x − 1

equation 3: y = 2x2 + 4

equation 4: y = 3x3

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2