Find an equation of cosine function with maximum of 7, minimum of -7 and period of 7

Step-by-step explanation:

y = A cos (Bx - C) + D

The minimum is -7 and the max is 7 so A = 7 and D = 0

Period is 7.  Since P = 2π/B then 7 = 2π/B --> B = 2π/7

Nothing was stated about a phase shift so you can use any value for C. I chose C = 0.

Now, input A = 7, B = 2π/7, C = 0, & D = 0 into the equation

heudhduxhdnshenebdutbbt

step-by-step explanation:

hrhhdhdbbrurb ees

the answer is 99.