PRETEST: CALCULUS I

What is 2.5+(-1.7)?

• -4.2

• -0.8

• 0.8

• 4.2

What is (3-√9)×4?

• -12

• 0

• 12

• 24

What is (5+2)×(3-4)?

• -49

• -7

• 1

• 3

What is the absolute value of -9?

• -9

• 0

• 1

• 9

Solve x-7=2?

• -9

• -5

• 5

• 9

Evaluate 7m+3mn when m=8 and n=14.

• 84

• 168

• 196

• 392

What is (4xy²)^-3 ?

• -64x³y⁶

• -4/x³y⁶

• 1/4x³y⁶

• 1/64x³y⁶

Expand (x-4)(x+4)

• x²-16

• x²+8x+16

• x²+16

• x²-8x+16

What is the factor of 6x²-13x-5 ?

• (6x+5)  (x-1)

• (3x+1)  (2x-5)

• (6x-1)  (x+5)

• (2x-1)  (3x+5)

Simplify the expression: (2x²-8)/(4x-16)

• (x+2)/2

• 2(x+2)

• (x²-4)/(2x-8)

• (x-2)