The charges for telephone calls ,t is partly constant and partly varies with the number n if unit of calls, the bull for 420 units of call is 806 while the bill for 20o unit is 410, Obtain the charges per unit of calls
Find a formula for t​

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.

since no one answered yet i will give it a shot, not completely sure tho.

i think it should be y=cos(x+2pi), (third answer, answer c)

good luck.

good luck on ur quiz test or homework. have a good day : )

the anwers is yes.