312 x 2543

What do you think "!" means in Mathematics?

• add from 1 to the number (ex. 4! = 10)

• multiply from 1 to the number (ex. 4! = 24)

it is multiplying.

• ok

• ...

19! = ? (There is only one answer)

• 24

• 121645100408832000

• 121645150408822000

• 1423245652341534000

• 234569824375982700

Write log_b(x/y) as two logs

• log_bx-log_by
• log_bx+log_by
• log_bx*log_by
• log_bx/log_by

Use multiple log properties to write as a sum or difference of two logs: log(4x³) 

• log 4 + 3log x
• 3log 4 + 3log x
• 3log 4 + log x
• log 12 + log x

Use multiple log properties to write as a single log:
log₂x -  5log₂y

• log₂(x/y⁵)
• log₂(xy⁵)
• log₂(x/y)⁵
• log₂(x/5y)

Solve for x:  log₆x + log₆(x-5) = 2

• √7
• 9
• 4
• none of these