Eliza reads 1/7 of her book on Monday. On Tuesday and Wednesday combined, she reads three times as much as she reads on Monday. The expression 1/7r + 3(1/7r) can be used to determine the number of pages Eliza reads on Monday, Tuesday and Wednesday combined. The variable r represents the total number of pages in the book. Eliza’s book has a total of 357 pages. How many pages does Eliza read on Monday, Tuesday and Wednesday combined.

468

step-by-step explanation:

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 think the amount would be $140.62

the answer is 1030 it's very simple math.