The water level in a tank can be modeled by the function h(t) = 8cos((pi*t)/7) + 1 * log theta where t is the number of hours since the water level is at its maximum height, h. How many hours pass between two consecutive times when the water in the tank is at its maximum height?

okay wait before i answer, is this for your points on a graph?

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8