The equation c = 40x + 25 gives the cost, c, to hire a plumber for x hours.

a. what is the cost for 4 hours?
b. if the cost is $265, for how many hours did the plumber work?

A 125

Step-by-step explanation:

(40x4) +25

Step-by-step explanation: A

First you substitute and compute for x

C=40x+25 goes to C = 40(4) +25.

Then you multiply 40 tines 4 and get 160 and add 25 and get $165.

Step-by-step explanation: B

First you take tge equation c =40 x +25 and change it to 265= 40x +25.

Then you use inverse operations and do

265 = 40x+25 then using inverse operation you first subtract 25 from 265. Which is 240

Then you take that 240 and divude it by 40 and get 6.

So, x=6 hours.

b

step-by-step explanation:

given

- 2 (3x + 12y - 5 - 17x - 16y + 4 )

simplify the parenthesis by collecting like terms

= - 2 (- 14x - 4y - 1) ← distribute the parenthesis by - 2

= 28x + 8y + 2 → b

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5