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How to do this: 1.Simplify the expression. (x − 2)(2x − 4) − (x + 1)(x − 6) 2. Suppose that a spreadsheet contains the following values. Determine the value of cell E1 if it contains the following formulas. (a) +A1 + B1 E1 = 1 (b) +2*A1 + 4*B1 E1 = 2 (c) +C1*(A1 + 3*B1) E1 = 3 3. Solve the equation. 2(W + 4) − 3(W + 5) = 0 W = 4. Solve the equation. (Enter your answers as a comma-separated list. If there is no real solution, enter NO REAL SOLUTION.) x2− 6x + 6 = 0 x = 1 5. Young’s Rule for calculating a child’s dosage for medication is CHILD’S DOSE = AGE OF CHILD AGE OF CHILD + 12 × ADULT DOSE. (a) If an adult’s dose of a particular medication is 100 mg, what is the dose for a 10-year-old child? (Round your answer to one decimal place.) 1mg (b) If a 12-year-old child’s dose of a particular medication is 5 mg, what is the adult’s dose? 2 mg

How to do this:

1.Simplify the expression.

(x − 2)(2x − 4) − (x + 1)(x − 6)

2. Suppose that a spreadsheet contains the following values.

Determine the value of cell E1 if it contains the following formulas.

(a)    +A1 + B1

E1 = 1

(b)    +2*A1 + 4*B1

E1 = 2

(c)    +C1*(A1 + 3*B1)

E1 = 3

3. Solve the equation.

2(W + 4) − 3(W + 5) = 0

W =

4. Solve the equation. (Enter your answers as a comma-separated list. If there is no real solution, enter NO REAL SOLUTION.)

x2− 6x + 6 = 0

x =

1

5. Young’s Rule for calculating a child’s dosage for medication is

CHILD’S DOSE =

AGE OF CHILD
AGE OF CHILD + 12

× ADULT DOSE.

(a) If an adult’s dose of a particular medication is 100 mg, what is the dose for a 10-year-old child? (Round your answer to one decimal place.)

1mg

(b) If a 12-year-old child’s dose of a particular medication is 5 mg, what is the adult’s dose?

2  mg

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