C. If 3/5 of a number is 4 more than 1/2 of 10, then what is the number?

The number is: 15

Step-by-step explanation:

Change the English expression to a mathematical equation:

an unknown number → x

so we have

is → =

4 more  → 4+

1/2 of → 1/2 x 10

this gives you the equation:  

You then solve for x:  (3x)/5 = 4 + 5

(3x)/5 = 9

x = 9(3/5) = 15

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.