one number is 5 times a first number. a third number is 100 more than the first number. if the sum of the three numbers is 296, find the numbers.

Let the first number = x

The second number would be 5x

The third number would be 100x

Add:

X + 5x + 100+x = 296

Simplify:

7x + 100 = 296

subtract 100 from both sides:

7x = 196

Divide both sides by 7

X = 196 / 7

X = 28

First number is 28

Second number is 28 x 5 = 140

Third number = 128

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.