How to do this
How to do this:
1.Simplify the expression.
(
x
−
2)(2
x
−
4)
− (
x +
1)(
x
−
6)
x
−
2)(2
x
−
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]
+A1 + B1
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)
−
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.)
x
2
−
6
x +
6 = 0
2
−
6
x +
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
10-year-old child? (Round your answer to one decimal place.)
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
