Addison was already 38 kilometers south of Chicago when she started to drive further south at a speed of 56 kilometers per hour.
Let h represent the number of hours since Addison started to drive further south
and k represent the number of kilometers she is south of Chicago.
Find the value of k when h = 3.
k =

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!

3x + 4y -25 =0 represents the amount of change sianna should recieve

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed