Answer: 5k +7
Step-by-step explanation: -2k + -7k + 5k is -4K and 2+3=5 -4K +5 and 6k +3k= 9k + 2 then u do -4K plus 9k and get 5k next, 5+2
Answer:multiply
Step-by-step explanation:6x4 but i aint sure tho
Use distributive method
5r - 50 = -51
Add 50
5r = -1
Divide by 5
r = -1/5
It is a line
it represents te relationship between the cost and time bought
Saw A = 150 planks/30 seconds = 5 planks per second
Saw B = 130 planks/ 13 seconds = 10 planks per seconds
5 + 10 = 15 planks per second total
225 planks / 15 planks per second = 15 seconds
Answer: 15 seconds
