Section 1.1 Functions Given by Formulas TRUE/FALSE 1. The functional notation ANS: F
means
.
PTS: 1
2. The functional notation ANS: T
DIF:
easy
means the function whose name is
PTS: 1
DIF:
evaluated at .
easy
3. The only valid way of presenting a function is with a formula. ANS: F
PTS: 1
DIF:
easy
4. For functions that model practical phenomena, the variables involved often have units associated with them. ANS: T 5. If a.m.
PTS: 1
represents the temperature
ANS: T
DIF:
easy
hours after midnight, then
PTS: 1
DIF:
indicates the temperature at 7:00
easy
6. If represents the value of a car years after it is purchased from the dealer, then the value of the car on the showroom floor. ANS: T 7. If
PTS: 1
easy
represents the cost of purchasing burgers, orders of fries, and represents 10 burgers, 6 orders of fries, and 12 drinks.
ANS: F 8. If can use
DIF:
PTS: 1
DIF:
drinks, then
easy
represents the cost of purchasing belts, pairs of earrings, and necklaces, then we to indicate the cost of buying 2 belts, 4 pair of earrings, and 1 necklace.
ANS: T
PTS: 1
DIF:
9. If represents federal defense spending defense spending in 2012. ANS: F
PTS: 1
easy
years after 2000, then
DIF:
easy
MULTIPLE CHOICE 1. If
indicates
, calculate the value of
.
represents federal
