Ilike really need so can someone answer
1. select all relations that represent functions.

2. mrs. anderton is giving a test in her third-period class. she has decided to record the amount of time that each student takes to finish the test (in minutes) and compare that to the grade each student receives on the test (out of 100). a plot of her results is below.

which of the following does this situation represent?

a. neither a relation nor a function

b. a relation only

c. a function only

d. both a relation and a function

3. which of the following best describes the equation below?

y = 4

a. relation only

b. neither a relation nor a function

c. function only

d. both a relation and a function

step-by-step explanation:

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first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!

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.

it would be 6xy and -16xy.