Can you please answer my question please answer my questions correctly and show work

37) C

38) D

39) C

Step-by-step explanation:

37)

Perimeter of a circle = 2 π r

It is given that the radius is 4 yards

Substitute this into the formula

2 π 4

Substitute 3.14 in for π

2(3.14) * 4

6.28 *4

25.12

Rounded to the nearest tenth of a yard:

25.1    C

38)

Yvette's salary = s

Increased by 4.5%

4.5% = 0.045

Current salary: s + 0.045s         D

39)

Length =  = 4.75

Width = 4.75 ÷ 2 = 2.375

Area = (2 * Length) + (2 * Width)

Substitute in length and width values

Area = (2 * 4.75) + (2 * 2.375)

Area = 9.5 + 4.75

Area = 14.25 inches =   inches

C

Hope this helps :)

f(x) has value 150 at x= 0

and 0 at x= 3

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