Answer this and you will be marked as brainliest
show your work by hand/show your work
and if you need more clarification for question 1 look at the screenshot
question 1. given the problem below:
a. write an expression you would use to solve/answer this problem.

b. before you can solve by hand, what must you do with the decimal in the divisor?

c. does this change any other parts of your problem? if so, what and how?
ellie earned $18.40 by babysitting. she worked 2.3 hours. how much many was ellie paid per hour

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

I’m stuck on this equation, anyone got the answer?

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec