Find f'(1) if 6x*(f(x))^4 + 9x^3 f(x) = 78 and f(1) = -2

Amotorboat maintained a constant speed of 12 miles per hour relative to the water in going 45 miles upstream and then returning. the total time for the trip was 8.0 hours. use this information to find the speed of the current.

Describe a situation where it would be beneficial to round decimals to the nearest dollar. explain why you would use rounding in that situation.

The weather forecaster says that there is a 51% chance of rain today. which statement describes the likelihood that it will rain today?