The Formula C = 20W shows how much the cost, C, of sending a letter by first-class mail depends on The Formula C = 20W shows how much the cost, C, of sending a letter by first-class mail depends on the weight of the letter, W. (C is measured in cents and W is measured in ounces). So you consider C a function of W and write C(W) = 20W. What is the domain of C?

The domain of C = All positive real numbers

The given relationship is:

C  =  20W

where:

W represents the weight of the letter in ounces

C represents the cost of sending the letter in cents

The domain of a function is a set of all the input values.

In the function C = 20W, the weights (W) represent the input values.

Since the weight of a letter cannot be negative, it can only contain positive real numbers (Both integers and decimals)

Therefore, the domain of C is a set of all positive real numbers

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answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

55% are girls and 45% are boys : ) hope this

step-by-step explanation: