C C On a number line, a number, b, is located the same distance from 0 as another number, a, but in the opposite d
The number b varies directly with the number a. For example b = 2 when a = -2-
-2. Which equation represen
direct variation between a and b?
b=a
-b = -a
Ob-a = 0
Ob(-a) = 0

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!

addition

step-by-step explanation:

answer: 819.89 miles across america

step-by-step explanation:

can you take a photo of the screen?