Please help must show work

29. A) 8+0.40x≤12

B) x≤10

C) a number line with points at 0 and 10, filled in

30) A) 2x≤18

B) x≤9

C) a number line with points at 0 and 9, filled in.

Step-by-step explanation:

29. A) 8+0.40x≤12

B) 0.40x≤12-8

0.40x≤4

x≤10 They can have up to 10 toppings

C) a number line with points at 0 and 10, filled in

30) A) 2x≤18

B) x≤18÷2

x≤9 He can drive up to 9 hours.

C) a number line with points at 0 and 9, filled in.

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!