Answer:
Step-by-step explanation:
x²-x-30=0
x² - 6x + 5x - 30 = 0
(x² - 6x) + (5x - 30) = 0
x(x - 6) + 5(x - 6) = 0
(x + 5)(x - 6) = 0
x + 5 = 0 or x - 6 = 0
x = -5 or x = 6
Simply cross multiply:
18*m = 6*15
18m = 90
m = 5
You would see how many times 6 goes into 30. Which is 5. so you would take 2.5 multiplied by 5. which equals 11 hours
Answer:
By the looks of it the answer is A
