The dad has a son and a daughter. The daughter is 19 years younger than the son. The son is 13 years younger than the dad (Don't ask, just keep reading.) The daughter is 21 years old now. How old is the dad? Dad - 13 years older than son
Son - 19 years older than daughter
Daughter - 21 years old

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

Malia is observing the velocity of a cyclist at different times. after two hours, the velocity of the cyclist is 15 km/h. after five hours, the velocity of the cyclist is 12 km/h. part a: write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist at different times. show your work and define the variables used. (5 points) part b: how can you graph the equations obtained in part a for the first 12 hours? (5 points) if you can try and make this as little confusing as you can

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)