Question

Kelly has 4 dimes and some nickels. The total value of her coins is $2.25 write an equation for this

Answer 1

$4(.1) + x(.05) = 2.25$
"x" equals the number of nickels. So the equation above accounts for the 4 dimes which are worth .1 each, then the variables in question are nickels which are worth .05. The total amount of money Kelly has is $2.25 which is represented after the equal sign.