Question

problem solving..
pls help.

An internet bookstore charges ₱15 shipping for orders under ₱100, but provides free shipping for orders ₱100 or more. The cost C of an order is a function of the total price x of the books purchased, given by C(x)= {█(x+15 if x<100@ x if x ≥100)┤.

Findthe following:
a.(75),(90),C(100), C(105)

Answer 1

Take each value. If it is less than 100, add 15. If it is 100 or greater, leave it alone. you'll be done in no time.

Answer 2

If x=75 then C=75+15=90 because 75 is less than 100. if x=90 then C=90+15=105 again because 90 is less than 100 we add 15 shipping fee. In case if x=100 then no shipping fee and C=100 itself. the same is true for 105, there is no shipping fee asa far as 105 is greater than 100, therefore in the very last case C=105.

Answer 3

so the answer is,,

x=75
c=75+15=90

x=90
c=90+15=105

x=100
c=100+no shipping fee=100

x105
c=105+no shipping fee=105

Answer 4

thanks @samirfrom160

Answer 5

yes it is.

Answer 6

and u r wellcome.