Plz Help! Which function forms an arithmetic sequence?
a. f(x) = 8(2)*
b. f(x) = 3x^3 + 1
c. f(x) = 5/x-2
d. f(x) = 2x - 4

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)

Which of the following can be used to explain a statement in a geometric proof?

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6