The sum of 1 and 7 times a number is 64. write and solve an equation to determine the number. select the solution and graph that represents the number

x=4

x=6

x=7

x=9

x = 9

Step-by-step explanation:

Let the number be x.

7 times the number is 7 times x, or 7x.

The sum of 1 and 7 times a number is 7x + 1.

That sum equals 64, so we set the sum equal to 64, and we solve for x.

7x + 1 = 64

Subtract 1 from both sides.

7x = 63

Divide both sides by 7.

x = 9

x = 8, 1 + 7 + 8 and 8 x 8 equals 64. good luck!