A sandwich store charges $10 delivery fee and $4.50 b. what is the total cost for x sandwiches ?

Step-by-step explanation:

a sandwich store charges $10 delivery fee and $4.50

b. what is the total cost for x sandwiches ?

           total cost equals the cost of the sandwiches plus the delivery fee

one sandwich cost $4.50    

x number of sandwiches cost        x times $4.50   or $4.50(x)

delivery fee = $10

total cost equals the cost of the sandwiches plus the delivery fee

                            total cost  =        $4.50(x)      +               $10

total cost  =  $4.50(x)  +  $10

step-by-step explanation:

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%