Evaluate each expression for n = 5.
1. 9n - 9
2. (3n + 5n)10
3. 12 x n/2

Step-by-step explanation:

Given

n = 5

1. 9n - 9

= 9 * 5 - 9

= 45 - 9

= 36

2 . (3n + 5n) 10

= ( 3 * 5 + 5* 5)10

= 40* 10

= 400

3 . 12 * n/2

= 12 * 5 / 2

= 6 * 5

= 30

Hope it will help :)

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!

d

step-by-step explanation:

i used the pitagoras theoreme