MA105 College Algebra Week 8 Assessment

Multiply. 4(5x)

A) 9x B) 9 C) 20 D) 20x

Subtract. (8n7 + 2n6 + 17) - (5n6 + 5n7 + 15)

A) 3n7 + 7n6 + 32 B) 3n7 - 3n6 + 2 C) 2n13 D) 3n7 - 3n6 + 32

Find the zeros of the polynomial function. f(x) = x3 + 4x2 - 9x - 36

A) x = -3, x = 3 B) x = -4, x = -3, x = 3 C) x = -4, x = 9 D) x = 4, x = -3, x = 3

Solve the equation by factoring. 3x(x - 5) = 7x2 - 16x

A) B) C) {0, 4} D) {0}

Simplify log2 25

A) 10 B) 5 C) 2 D) 32

Determine whether the relation is a function. {(-5, -4), (-2, 9), (-1, -2), (-1, 7)}

A) Not a function B) Function

Find the slope of the line that goes through the given points. (-3, -7), (9, -7)

A) -4 B) 1 C) 4 D) 0

Determine whether the equation defines y as a function of x. x + y = 9

A) y is not a function of x B) y is a function of x

Solve and check the linear equation. 0.40x - 0.20(50 + x) = -0.04(50)

A) {30} B) {40} C) {50} D) {20}

Evaluate the function at the given value of the independent variable and simplify. f(x) = x2 - 1; f(x - 2)

A) x2 - 4x + 4 B) x2 + 4 C) x2 - 3 D) x2 - 4x + 3

Multiply. -8x2(-10x4 + 9x3)

A) 8x6 + 8x5 B) 80x6 + 9x3 C) 80x6 - 72x5 D) 8x2

Simplify log6 

A) -2 B) 2 C) 6 D) -6

Add. (-9 + 3n6 + 3n5) + (2n6 + 5n5 + 6)

A) 10n11 B) -7n6 + 8n5 + 9 C) 5 + 8n6 - 3n5 D) 5n6 + 8n5 - 3

Find the slope of the line that goes through the given points. (-1, 4), (5, 4)

A) 2 B) Undefined C) D) 0

Find the degree of the polynomial function. g(x) = -7x3 + 9

A) 4 B) 3 C) 0 D) -7

Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point. f(x) = -x2 - 2x - 6

A) maximum;  B) minimum;  C) minimum;  D) maximum; 

Solve the equation by factoring. x2 = x + 6

A) {-2, -3} B) {1, 6} C) {-2, 3} D) {2, 3}

Find the vertical asymptotes, if any, of the graph of the rational function. g(x) = 

A) no vertical asymptote B) x = 4, x = -4, x = 0 C) x = 4, x = -4 D) x = 4

Solve and check the linear equation. 9x - (7x - 1) = 2

A) B) C) D)

Find the zeros of the polynomial function. f(x) = x3 + x2 - 42x

A) x = 5, x = 6 B) x = 0, x = 5, x = 6 C) x = - 7, x = 6 D) x = 0, x = - 7, x = 6

Factor. y2 - 64

A) (y2 + 8)(y2 - 8) B) (y - 8)(y - 8) C) (y + 8)(y - 8) D) (y + 64)(y - 64)

Convert to an exponential equation log9  = -2

A) 29 =   B) 9-2 =   C) 2 = 9 D) 981 = 2

Solve and check the linear equation. 6[-6x + 6 + 4(x + 1)] = 6x + 2

A)   B) C)   D)  

Write in logarithmic form 43 = 64

A) 4 = log 3 64 B) 3 = log 64 4 C) 64 = log 4 3 D) 3 = log 4 64

Simplify 9log9(7)

A) 9 B) 7 C) 97 D) 1