A program on television ran 30 minutes. The program ran 7 minutes longer than 3 times the length of the commercials. Let the length of the commercials be represented by the variable x. Which equation represents this problem?
A. 3x + 7 = 30
B. x + 7 = 3(30)
C. 3x = 30 + 7
D. 7x + 3 = 30

Question

A program on television ran 30 minutes. The program ran 7 minutes longer than 3 times the length of the commercials. Let the length of the commercials be represented by the variable x. Which equation represents this problem?
	A.	3x + 7 = 30
	B.	x + 7 = 3(30)
	C.	3x = 30 + 7
	D.	7x + 3 = 30

♪chibiterasu · Answer

30 is the main product, so we first have:

= 30

3 times the length of the commercials means 3(x), x being whatever the commercials last in terms of time.

3x = 30  << not complete

7 minutes longer means we are going to add 7 on to the soooo:

3x + 7 = 30

Success :D

To find the length of the commercials just solve:

3x/3 + 7 = 30/3

x + 7 = 10

x + 7 - 7 = 10 - 7

x = 3

The commercials last 3 minutes :3

anonymous · Answer

so its b?