I need these done within one hour. If there re multiple answers I will give the best one brainiest and 5 stars

a. 9ab

b. 9a

C. 4a

d. 2a^2b^2

e. -8c^3

f. 12x^3y^3

g. 25a^2

h. 2b^2

I. -2ab^2

Step-by-step explanation:

Hope this helps! Mark brainliest please worked a long time

answer is x<

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!