Hi. can anyone me with these problems

1.) 14 - (-17)
2. a bus makes a stop at 2: 30, letting off 13 people and letting on 3. the bus makes another stop ten minutes later to let off 2 more people. how does the number of people on the bus after the second stop compare to the number of people on the bus before the 2: 30 stop? were there fewer people? or more people?
3.) cate and elena were playing a card game. the stack of cards in the middle had 26 cards in it to begin with. cate added 8 cards to the stack. elena then took 7 cards from the stack. finally, cate took 4 cards from the stack. how many cards were left in the stack

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: