Question

Write a function rule that gives the total cost c(p) of p pounds of sugar if each pound costs $0.59.

Answer 1

the cost of each pund is 0,59 so should it be a variable or a constant?

Answer 2

after u determine that, determine if each pound p is a variable or a constant.

Answer 3

i chose the first one the first time i did this

Answer 4

right now do you what defines a constant and a variable?
because its better to know the diffrence then you will always know by instict.

Answer 5

huh ?

Answer 6

a constant is something that u can't change, example 0,59 u can't change it right?
therefore it's a constant, now p is a variable, because you can change it to whatever u want, in this case the amount of pounds u want, therefore it is called a variable, yes?

Answer 7

aggreed

Answer 8

now if u want 2 pounds and 1 pound cost 0,59 how much should two pounds cost?

Answer 9

idk

Answer 10

if one pound cost 0,59 shouldnt 2 pounds be 0,59 * 2?

Answer 11

okayy thats what i should solve ?

Answer 12

yes, every pound is dependent on the constant 0,59 because that is the price for each pound, therefore u can multiply the constant 0,59 to each pound u want to buy,
so now what should the function look like?

Answer 13

so itll be the second one ?

Answer 14

Why do u think it is the second one? whats ur logic behind it?

Answer 15

its doing what u said if im not wrong

Answer 16

the 2nd answer is incorrect, u know why?

Answer 17

im confused why is tht ?

Answer 18

0,59*p gives u x the price for p amount of pounds u want, so it only multiplies.

Answer 19

uh whats the answer

Answer 20

that is the answer. and now u understand also yes?