All of the following were economic changes as a result of the railroads except which? a. Cash crops became possible due to expanding agriculture. b. Lumbering grew as a result of increasing populations in towns. c. Thousands of new factories were established to manufacture materials needed for railroads. d. Land prices decreased as new territories opened. Please select the best answer from the choices provided A B C D

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!

i believe that the slope of the line is -5

step-by-step explanation:

answer: the answer is   graph (a)