• To represent the number of squares after steps, Diego and Jada wrote different equations. Diego wrote the equation f(n)= n(n+2). Jada wrote the equation
f(n) = n2 + 2n. Are either Diego or Jada correct? Explain your reasoning.

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.