Mark and amber vinson have $22,000 to invest in two accounts, part at 10% and part at 12%. if they want to earn a return of at least $2,400 on the accounts, how much should they invest at 12%? show work .

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

Could someone me with this question i’ve been stuck on it for 20 minutes

If the function m(x) has the point (5,2) on its graph name a point that would be on the funtion m(5x)