Final exaM 457
DeMYSTiFieD / algebra DeMYSTiFieD / gibilisco / 000-0 / appendix
- 65 xx^2 ++= 1
A. ()()3131xx++ B. ()()31xx++^21 C. ()^51 xx++()^1
D. 65 xx^2 ++ 1 cannot be factored.
- John is 113 times as old as Jimmy. John is also 4 years older than Robert.
The sum of their ages is 62. How old is Robert?
A. 16 years B. 18 years C. 20 years D. 22 years
- 1
1
3
1
5
x^22 − x xx 23
+
+
+
+−
=
A.
361
113
xx^2
xxx
−+
()−+()()− B.^
365
113
xx^2
xxx
++
()−++()()^
C.
915
113
x
xxx
+
()−++()() D.^
3121
113
xx^2
xxx
+−
()−++()()^
- A highway crosses a riding path that runs along a river. At 5:00, a car
passes over the riding path, heading west at 60 mph. At the same in-
stant, a bicyclist is riding on the path southward at 11 mph. Assuming
they maintain their speed and direction, when will they be 6.1 miles
apart?
A. At 5:04 B. At 5:06 C. At 5:08 D. At 5:10
- The owner of a shopping village has leased all 80 units, charging monthly
rent of $2400. Because of a new shopping center being built, he feels he
will lose 5 tenants for every $100 increase in the rent. The owner of the
shopping village expects monthly revenue to be $168,000. What rent
should he charge so that the shopping village earns enough revenue?
A. $2500 B. $2600 C. $2700 D. $2800
- If xx^2 += 64 , then
A. x=− ±^313 B. x=− ±^3213 C. x=− ±^35 D. x=− ±^325
- The perimeter of a right triangle is 154 cm. One leg is 23 cm longer than
the other. The hypotenuse is 9 cm longer than the longer leg. How long
is the hypotenuse?
A. 56 cm B. 59 cm C. 62 cm D. 65 cm
