Find the difference. (Subtract like terms)
5. (3s + 4) – (6s² - 2s)

6. (9w² - 5) – (4w² + 9w + 7)

7. (y² -6y + 12) – (-3y² - 6y + 10)

8. (8z³ + 6z² -9) – (4z² - 7z – 4)

step-by-step explanation:

4x and 6y

im not sure though

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!