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[removed] [removed][removed]
E1 = 1[removed] [removed][removed]
(b) +2*A1 + 4*B1
E1 = 2[removed] [removed][removed]
(c) +C1*(A1 + 3*B1)
E1 = 3[removed] [removed][removed]
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.)
1[removed][removed]mg
1[removed][removed]mg
(b) If a 12-year-old child’s dose of a particular medication is 5 mg, what is the adult’s dose?
2 [removed][removed] mg
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