one coin is seven more than twice as old as another. Represent the ages of the coins using a single variable.

x = age of coin 1

7 + 2*x = age of coin 2.

Step-by-step explanation:

We have two coins, let's denote the ages as:

x = age of coin 1

y = age of coin 2.

Then, the statement is:

"one coin is seven more than twice as old as another."

let's suppose that this refers to y, then:

y = 7 + 2*x

So now we can represent the ages of both coins with only one variable, x.

x = age of coin 1

7 + 2*x = age of coin 2.

y=mx+

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.