Im having problems with these questions. Would appreciate any help given.
1. 1. The volume of a cylindrical tank is given by formula V=PIE(SYMBOL)h r^2 where h is the height of the cylinder and r is its radius. Find the volume to the nearest tenth of a cubic foot of a cylinder tank that has a radius of 3 feet and a height of 5 feet.
a. 47.1 cu.ft
b. 49.2 cu.ft
c.135.0 cu.ft
d.141.4 cu.ft
2. Express as a polynomial (x+a)[x^2-ax/x]
a.x^2
b.x^2-2ax-a^2
c.x^2-2ax+a^2
d.x^2+ax+a^2
3.If points A,B,and C lie on a cordinate line and points A and B have coordinates 15 and 7 respectively, then which of the possible coordinates for point C satisfy(ies) d(A,C)<d(B,C)?
A.12
B.17
C.Both (a) and (b)
d.neither (a) nor (b)
4. Solve the inequality 21/15-3X<0, AND EXPRESS THE SOLUTION AS AN INTERVAL.
A.(5,o0)
B.(7,o0)
C.(-o0,5)
D.(-o0,7)
5.Find the distance between the points A(4,-3) and B(-4,3).
A.5
B.7
C.10
D.14
6.Find the domain of f(x)=7+squarerootsymbol 3x+21, and express it using interval notation
A. [-7,o0)
B. [0,o0]
c. [7,o0]
d. [21,o0]
7. If f(x)=x(x+1)(x- 4),use interval notation to give all values of x where f(x)>0.
a. (-1,4)
b. (-1,0) u(symbol looks like a horseshoe) (4,o0)
c. (-1,4)
d. (0,1) u (4,o0)
8. The degree three polynomial f(x) with real coefficents and leading coefficent 1, had -3 and +4i among its roots. Express f(x) as a product of linear and quadratic polynomials with real coefficients.
a. f(x)=(x+3)(x^2+16)
b. f(x)=(x+3)(x^2+8x +16)
c. f(x)=(x+3)(X^2-8X+16)
d. f(x)=(x-3)(x^2+16)
9. Find the inverse of the function f(x)=x^1/3+2.
a.(x-2)^3
b.x^1/3+2
c.(y-2)^3
d.doesnt exist
10. a bacteria culture with a count of 720 at 8:00 AM, and after t hours is expected to grow to f(t)=720(3/2)^t. ESTIMATE THE NUMBER OF BACTERIA IN THE CULTURE AT 11:00 A.M. THE SAME DAY.
A.1620
B.2160
C.2430
D.2880
1. 1. The volume of a cylindrical tank is given by formula V=PIE(SYMBOL)h r^2 where h is the height of the cylinder and r is its radius. Find the volume to the nearest tenth of a cubic foot of a cylinder tank that has a radius of 3 feet and a height of 5 feet.
a. 47.1 cu.ft
b. 49.2 cu.ft
c.135.0 cu.ft
d.141.4 cu.ft
2. Express as a polynomial (x+a)[x^2-ax/x]
a.x^2
b.x^2-2ax-a^2
c.x^2-2ax+a^2
d.x^2+ax+a^2
3.If points A,B,and C lie on a cordinate line and points A and B have coordinates 15 and 7 respectively, then which of the possible coordinates for point C satisfy(ies) d(A,C)<d(B,C)?
A.12
B.17
C.Both (a) and (b)
d.neither (a) nor (b)
4. Solve the inequality 21/15-3X<0, AND EXPRESS THE SOLUTION AS AN INTERVAL.
A.(5,o0)
B.(7,o0)
C.(-o0,5)
D.(-o0,7)
5.Find the distance between the points A(4,-3) and B(-4,3).
A.5
B.7
C.10
D.14
6.Find the domain of f(x)=7+squarerootsymbol 3x+21, and express it using interval notation
A. [-7,o0)
B. [0,o0]
c. [7,o0]
d. [21,o0]
7. If f(x)=x(x+1)(x- 4),use interval notation to give all values of x where f(x)>0.
a. (-1,4)
b. (-1,0) u(symbol looks like a horseshoe) (4,o0)
c. (-1,4)
d. (0,1) u (4,o0)
8. The degree three polynomial f(x) with real coefficents and leading coefficent 1, had -3 and +4i among its roots. Express f(x) as a product of linear and quadratic polynomials with real coefficients.
a. f(x)=(x+3)(x^2+16)
b. f(x)=(x+3)(x^2+8x +16)
c. f(x)=(x+3)(X^2-8X+16)
d. f(x)=(x-3)(x^2+16)
9. Find the inverse of the function f(x)=x^1/3+2.
a.(x-2)^3
b.x^1/3+2
c.(y-2)^3
d.doesnt exist
10. a bacteria culture with a count of 720 at 8:00 AM, and after t hours is expected to grow to f(t)=720(3/2)^t. ESTIMATE THE NUMBER OF BACTERIA IN THE CULTURE AT 11:00 A.M. THE SAME DAY.
A.1620
B.2160
C.2430
D.2880