Determine whether or not the situation describes a function. give a reason for your answer.

the letter grade in this course is a function of your numerical grade.
a.
no, it is not a function. each letter grade corresponds to one numerical grade.
b.
no, it is not a function. each numerical grade corresponds to one letter grade.
c.
yes, it is a function. each numerical grade corresponds to one letter grade.
d.
yes, it is a function. each letter grade corresponds to one numerical grade.

The correct answer corresponding to the given situation is:

c.

Yes, it is a function. Each numerical grade corresponds to one letter grade

It is given that:

The letter grade in this course is a function of your numerical grade.

i.e. corresponding to a numerical grade a letter grade is assigned.

Hence, corresponding to one numerical grade a single letter grade will be given.

This means that each element will have a unique image.

Hence, the given situation describes a function.

Hence, option C is true.

c.

Yes, it is a function. Each numerical grade corresponds to one letter grade

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!