Help me with this math plz

Timed***how else can the sequence for row 1 be written? notice: square a: 1 penny = 20 square b: 2 pennies = 21 square c: 4 pennies = 22 the sequence formed is geometric, with a1 = , and common ratio r = .

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

What is the perimeter of square abcd? units units 28 units 37 units