What is the equation of a line that is perpendicular to the line y=3x-6 and passes through the point (15,5)?

1. y= -3x+10 2. y=3x-15 3. y=1/3x+10 4. y=-1/3x+10

Please help!! :)

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.

Given that δabc is similar to δdef, which is a possible trigonometric ratio for ∠d? a) tan d = 24 30 b) tan d = 30 24 c) tan d = 18 24 d) tan d = 24 18

Ineed the answers for this one as well!