Ajar contains n nickels and d dimes. there are 28 coins in the jar, and total value of the coins is $2.20. how many nickels and dimes are in the jar? show your work

Change negative exponents to positive, then solve

What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?

Let d be the domain and let ƒ be the possible function. determine if the relation is an example of a function. d = {x| x is a date, expressed in day/month/year} ƒ(x) = temperature in seattle washington on that date