11. simplify each expression.
a. 502+(-12.3)
b. -50.2+(-12.3)
c. -50.4+ 12.3
12. at the beginning of the day, the stock market
goes up 30 points. at the end of the day, the
stock market goes down 120 points. what is
the total change in the stock market from the
beginning of the day to the end of the day?
13. a dolphin is swimming 18 feet below the surface
of the ocean. there is a coast guard helicopter
75.5 feet above the surface of the water that is
directly above the dolphin. what is the distance
between the dolphin and the helicopter?

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

may i see the picture? it would a lot, xox

idk

step-by-step explanation: