Pl help

what is this?:double h, then add 7 to the result

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?