Can someone please answer this question I need it today please answer it correctly and please show work

answer:

Question 1

Part A:  Write an expression

2.25 + 5k = 9.00

Part B:  What is the price for each key/solve for k

2.25 + 5k = 9.00

2.25 + 5k - 2.25 = 9.00 - 2.25

5k / 5 = 6.75 / 5

k = 1.35 per each key

Questions 2

Part A:  Write an inequality

45 + 10b < 65

Part B:  What is the price for each bottle/solve for b

45 + 10b < 65

45 - 45 + 10b < 65 - 45

10b / 10 < 20 / 10

b < 2 for each bottle

Part C:  Graph the solution

Make a bubble that is not filled in at 2, and make a line go from that to the left side.  

10b is the number of bottles of water, plus the 45 you already spent and this has to be less than 65

10b + 45 < 65

10b < 65 - 45

10b < 20

b < 2

so the most amount of money you can spend on the water is less than 2 dollars, so 1.99

on the number line, you'll have to write out numbers and at 2, draw an empty circle above it and a line going backwards

hope i helped!

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get

step-by-step explanation: