7. Booker Bond demonstrates cookware at the National Food Fair. He is paid $6.00 each for the first 10 demonstrations in one day and $7.50 for each
demonstration over 10. What is Bond's commission for a day in which he
makes 21 demonstrations?

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

f(x) is the value of the function. b is the value of the function when x equals zero or the y-coordinate of the point where the line crosses the y-axis in the coordinate plane.

step-by-step explanation:

hope this !

answer: it's upside down and i can't read it

step-by-step explanation: