- Reasoning Use th e d artb o a rd at th e right. Can you
score exactly 100 points w ith seven darts th a t all land
on the board? Explain.
^SAT/ACTSt a n d a r d i ze d Test Pr ep
- W hat is th e value of th e y-coordinate of th e solution
of the given system? - W hat is th e y -intercept of 2x + 5y = 15?
16 RID D E D RESPON SE4x + 3y = 33
3x + 2y = 23- You buy a to o th b ru sh for $2.83 an d a tu b e of to o th p aste for $2.37. There is a
5% sales tax. Including th e tax, w hat is th e total cost in dollars of your purchases? - Three fire trucks an d 4 am bulances can fit into a parking lane 152 ft long. Two fire
trucks an d 5 am bulances can fit into a lane 136 ft long. How m any feet long m u st
a parking lane b e for 1 fire truck a n d 5 am bulances? A ssum e th ere is 1 ft of space
betw een each vehicle.
-152 ft
H-----------------------136 f t-----------------H- You are com peting in a m o u n tain bike race. Your average sp eed is 10 m i/h. If the
racecourse is 65 m i long, how m any m in u tes will it take you to finish th e race?
Mixed Review
Solve each system using substitution.
1- y = 2x
2y + 3x = 28
Solve each inequality.- 4 - 2a < 3 a - 1
51. x - 7 = y
2x - y = 41 - 3(2x — 1) s 5x + 4
Get Read y! To p r e p a r e f o r Le sso n 6 - 4 , do Ex e r c i se 5 6.
See Lesson 6-2.- x + 2y = - 1
3x - 5y = 30
4P See Lesson 3-4.- 2.7 + 2b > 3.4 - 1.5b
- Two trains ru n on two sets of parallel tracks. The first train leaves a city \ h
before th e second train. The first train travels at 55 m i / h. The second train
travels at 65 m i /h. How long does it take for th e second train to p ass the
first train?
See Lesson 2-4.384 Chapter 6 Sy st e m s o f Eq u a t i o n s a n d I n e q u a l i t i e s