Question 319364: I have been trying to do these over and over I just can't seem to get them. Your help would be awesome. thankyou! sorry theres so many but please help!
Find f(g(–2)) if f(x) = 4x + 5 and g(x) = x2 – 1.
a. 8
b. 17
c. 12
d. 21
Identify the inverse of the function f(x) = –7x + 2.
Find the equations of the vertical and horizontal asymptotes for the graph of the rational function with the following equation.
f(x)= 4/(x - 1)(x + 5)
a.x = 1, x = –5, y = 1
b. x = 1, x = –5, y = 0
c. x = –1, x = 5, y = 1
d. x = –1, x = 5, y = 0
If y varies inversely with x, and y = 6 when x = 18, find y when x = 8.
a. 13 ½
b. 2 ⅔
c. 12
d. 24
If y varies jointly as x and z, and y = 60 when x = 10 and z = –3, find y when x = 8 and z = 15.
a. –240
b. –120
c. –15
d. –9.6
Solve the following equation.
(2x + 1)/(x^2 - 25) - 1/(x - 5)= (x^2 - 4)/(x^2 - 25)
a. no solution
b. –2
c. 3
d. 3, –2
Chase can do a job in 4 hours, while Campbell can do the same job in 2 hours. How long will it take the two of them to do the job together?
a. 6 hours
b. 3 hours
c. 2 ⅔ hours
d. 1 ⅓ hours
Solve the equation 4(x + 2) = 8(x – 1).
a. 4
b. 5
c. 7
d. 8
Solve the equation log8 (x2 + 4x) = log8 12.
a. 2
b. 6
c. –2, 6
d. 2, –6
Solve the equation log2 3 = log2 (7x – 8) – log2 x.
a. no solution
b. 1
c. 2
d. 4
Find the antilogarithm of 1.7.
a..2304
b. .5306
c. 5.47
d. 50.12
Solve the equation ln x = 2. Round the answer to four decimal places.
a. 7.3891
b. .3010
c. .6931
d. 100
Solve the equation 8(x – 2) = 5x. Round the answer to three decimal places.
a. 9.578
b. 8.850
c. 5.293
d. 6.147
Answer by solver91311(24713)   (Show Source):
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