I really need help ASAP, its due on midnight

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20