Erin wants to purchase 3 cds for 10$each. she has $20. how much more money dose she need? explain how you know

answer: she needs another $10

step-by-step explanation:

1 cd= $10

2 cd's= $20

3 cd"s=30 total for 3 cd's

$30-$20 (amount she has)=$10

answer:

she needs $10 more

step-by-step explanation:

1 cd= $10

2 cd's= $20

3 cd"s=30 total for 3 cd's

$30-$20 (amount she has)=$10

possible explanation: i know this because 1 cd costs $10 and he buys 3 cd's so 10x3= 30. erin will pay $30 total, but he only has $20. 30 is less than(< ) 20. so he will need $10 dollars more.

in mathematics, a function is a relationship between two variables such that the value of one of the variables, called the dependent variable, is determined by the value of the other variable, called the independent variable. there is a specific term we use to describe the set of independent variables of a function.

the answer is 175.4379

step-by-step explanation: