Write an equation and solve it to answer each question: A pile of 55 coins, consisting of nickels and dimes, is worth $3.90. find the number of each.

You have to Answer like this:
If there are x nickels, then the equation is
The number of nickels is
the number of dimes is

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Barbara has a good credit history and is able to purchase a car with a low-interest car loan. she co-signs a car loan for her friend jen, who has poor credit history. then, jen defaults on the loan. who will be held legally responsible by the finance company and why? select the best answer from the choices provided. a. barbara will be held legally responsible because she has a good credit history. b. jen will be held legally responsible because she drives the car. c. barbara will be held legally responsible because she is the co-signer. d. jen will be held legally responsible because she has a poor credit history. the answer is a

I’m still confused on how to work the percentages