Josiah collected 15 postcards from across the United States. Then each of
his 4 grandparents gave him 7 more postcards for his collection. Which
expression could be used to find the total number of postcards he has in
his collection?
A (7+4) x 15
B (7 x 4) x 15
C (7 x 4) + 15
D (7+4) + 15

Please help for 25 points

Step-by-step explanation:

I think C. Because you would multiply the 7 and 4 then you would just add the 15

yeet

step-by-step explanation:

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation: