Can ya'll do my math homework too pleaseee? again I'll give brainliest and be rlly happy. also you gotta write show all the work you did to get the answer cuz my math teacher keeps yelling at me to do that.

f + 6 = -3

-3x = 21

2x + 6 = -12

15 - 3r = -45

21 + 3y = 5y + 8 - 2

3(2x - 1) = 4

-5(f - 3) = 2 - 3(2f - 2)

x + 1/2 = x - 3/7

7x + y + 8 = 0

2x + 2y + 6 = 0

6x - 4y + 8 = 0

Danny parks his car at a parking lot for a flat fee of $2.00 plus $0.25 per hour that his car is parked.

a) Write an equation to represent Danny's total parking cost, C, in dollars, for t hours.

b) How much will it cost Danny to park his car for a full 24 hours?

c) If Danny has $6, for how many hours can he park his car in the parking lot?

Jodi wants to buy a book that costs $18 before taxes. The taxes are 13% HST.

a) Write an equation for the total cost, C, after taxes for a book that costs r dollars.

b) Find the total cost of the book after taxes.

c) Suppose the cost of another book after taxes is $36.80. What was the total cost of the book before taxes?

ya I know it's a lot but I'd rlly appreciate it if ya'll could do at least some of it. I'm like drowning in over due assignments and it's not cute.

thank yo