Kelsey's preschool tuition is $180 per week. She receives a small discount for the honor roll, $50 per month. Her grandparents help out and pay 20% of her tuition. How much do her grandparents pay?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-12). the y intercept of the second parabola is (0,-24) what is the positive difference between the a values for the two functions that describe the parabolas