4.2+7/20=420/100+BLANK/100

4.2=420/100

4.2-4.2=0

7/20=x/100

x=5×7=35

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.

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4