Help please 50 points!

84%

Step-by-step explanation:

The mean has 50% below the mean and 50 % above the mean

The mean is 103.47

The standard deviation is 4.07

Add the mean and the standard deviation

103.47+4.07 = 107.54

We want to know how much data is below the mean plus one standard deviation

Within one standard deviation is 68% , but that is on both sides, we are  only needed on the right side so we need 1/2 of the 68 = 34

50+34 = 84

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.