Let a be the set of all binary strings of length four. Define a function that maps A to the set {0,1,2,3,4} by leggting f(s) be what you get when you add up the digits making up the string s.

y=mx+

25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)

y=x+9

?

step-by-step explanation:

the 1st digit is in the 100s n its 1

step-by-step explanation:

3,589÷18 = 199.389

so the first digit of the quotient is in the 100s n its 1