Convert 9.46 x 10^12 to expanded form

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?