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1. polynomials add or subtract(4x2 + 15x – 3) – (–3x2 + 5) (1 point)a.7x2 + 15x – 8 b. x2 + 12x + 2 c. x2 + 15x – 8 d.7x2 + 8 2. 2. simplify the polynomial. –3f2 + 4f – 3 + 8f2 + 7f + 1 (1 point) a.5f2 – 11f + 2 b.11f2 + 11f + 2 c.5f2 + 11f – 2 d.–5f2 + 11f – 2 3. add or subtract (2x2 + 6x + 1) + (–7x2 + 2x – 3) (1 point) a.5x2 – 4x – 2 b.–5x2 + 8x – 2 c.5x2 – 8x + 2 d.–9x2 – 8x + 2 4. name the coefficients in the polynomial. 4x2 + 3x – 3 (1 point) a.4, –3, –3 b.4, 3 c.4, 3, 3 d.–4, –3 5. how many terms are in the following polynomial? 6x4 + 3x3 – 2x2 + 15x – 14 (1 point) a. 5 b.4 c.3 d.2 6. in the expression –7x – 5x2 + 5, what is the coefficient of x? (1 point) a.7 b.5c.–5d. -7
7. write the expression using scientific notation. (2.5 • 104)(4 • 103) (1 point)a.10 • 107 b.10 • 108 c.1 • 108 d.10 • 1012 8. write the expression using a single exponent. 22 • 28 (1 point)a.410b.210< p>c.416d.216

(1) A

(2) C

(3) B

(4) The coefficients are 4,3,-3.

(5) A

(6) D

(7) C

(8) B

Step-by-step explanation:

(1)

The given expression is

Using distributive property.

On combining like terms.

Therefore, the correct option is A.

(2)

The given expression is

On combining like terms.

Therefore, the correct option is C.

(3)

The given expression is

Combined like terms.

Therefore, the correct option is B.

(4)

The given expression is

A number before variable terms are called coefficient of that term.

Therefore, the coefficients are 4,3,-3.

(5)

The given expression is

It this polynomial, the number of terms is 5.

Therefore the correct option is A.

(6)

The given expression is

The coefficient to x is -7.

Therefore, the correct option is D.

(7)

The given expression is

Using product property of exponent.

Therefore, the correct option is C.

(8)

The given expression is

Using product property of exponent.

Therefore, the correct option is B.

i just took the test, the correct answer is .. 31.5 in.

the car was traveling 40 mph before it started skidding. ( 2 points ) 17. was the driver were her brakes working at 75% efficiency or better? ( 2 points ) yes 29.

step-by-step explanation: