PLEASE HELP WILL MARK BRAINLIEST

The speaker vibrated 10 times in 41.07 milliseconds. Calculate how many vibrations would be produced in 1000 milliseconds

Itook a better photo of the question so y’all can see it i hope it’s a fine photo

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.