Adisk cost $3 more than a tape. rolex bought five disks and two tapes. the total cost was $120. what was the price of a disk?

First, I would organize your information into equations. So, the first sentence would be:

 d = 3 + t                 d = disk   and     t = tape

Second and third sentence would be the equation:

 5 d + 2 t = $120

To find the price of the disk, you would follow these steps.

5 (3 + t) + 2 t = 120            substitute d, with the equation that has a total, for 

                                           (3 + 2), then solve for t

15 + 5 t + 2 t = 120          distribute

15 + 7 t = 120                  add like terms

7 t = 105                         subtract from both sides

t = 15                               divide from both sides

Then you substitute 15 in the first equation.

d = 3 + t                           substitute

d = 3 + 15                        add

d = 18

So, d = 18 and t = 15. To check this, you just need to substitute the right variables.

1) 18 = 3 + 15

     18 = 18

2) 5 (18) + 2 (15) = 120

               90 + 30 = 120

                     120 = 120

When checking, we can see that the correct answer is $18 for the price of the disk.

$18

step-by-step explanation:

hey there!

if she's saving for six months, let's divide the total number we need for the trip by six, dividing it into the amount that needs to be saved for each month.

500 ÷ 6 =

she needs to save at least this amount each month, so we should use this symbol: ≥

let x be the amount she saves each month.

your final answer is x ≥

hope this !