Answer:
An=a+(n-1)d
Wish this will help you teaching me
B. 24
-5/4xX-5=-35
The equation is a little bit tough to write out so that might take a little bit longer, I'm sorry.
X= fancy, y= plain
x+y= 7
28x+ 15y=131
solve by substitution
3 red shells equals $2.25 and 5 white shells equal 2.45. Add those together and you get $4.70.
So 3 red and 5 white shells would be the next guess.