What is the derivative of (4secxtanx)?

a. 4(sec(x)^2 * tan(x) + sec(x)^3)

b. 4(sec(x) * tan(x)^2 + sec(x)^3)

c. 4(sec(x)^2 * tan(x) - sec(x)^3)

d. 4(cot(x)^2 * tan(x) + 4sec(x)^2 * tan(x)

e. 4cot(x)^2 * tan(x) + 4sec(x)^2

i have been trying to do this question for a while now and keep getting an answer of 4sec(x) * tan(x)^2 + 4sec(x)^3 by the product rule. i can't see how any of the answers in a-e are equivalent. is my answer wrong?

45

step-by-step explanation:

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.

hey there : ) your answer would be a.

step-by-step explanation:

$320 to $405

step by step explanation:

in one day he earns between $64 and $81

therefore if he works for 5 days, he will earn between 64 x 5 to 81 x 5

= $320 to $405