The price of a 6-minute phone call is 1.80 what is the price of a 17-minute phone call

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase