Algebra and Function Practice

1) If 4a+1=64, what is the value of a? A) 15.75 C) 14.5 B) 14.75 D) 16

2) If 2ab+6a=4 and a=½, then b =?

A) 1 B) 2 C) 3 D) 4

3) 6b²-24b+24=? A) 6 (b-4) B) 6 (b-4) ² C) (6-2) ² D) 6 (b-2) ²

4) What is 4x+5x=? A) 1x B) 20x C) –9x D) 9x

5) The price of a sweater went up 20% since last year. If last years price was x, what is this years price in term x? A) 1.2x B) 3.6x C) 0.5x D) 0.2x

6) If rs+4 which of the following CANNOT be a value for s? A) -5 B) -1 C) -4 D) 0

7) Julie has cats, fish, and frogs for pets. The number of frogs she has is more than the number of cats, and the number of fish is ³ times the number of frogs. Of the following, which could be the total number of these pets? A) 15 B) 19 C) 17 D) 12 Algebra and Function Practice

8) For what value of k is (k+3)²=(k-3)²? A) 0 B) 4 C) 6 D) 45

9) Solve 5 ´\/¯x +14= 29 A) 7 B) 4 C) 6 D) 9

10) In a chemistry class, s students are to be assigned to work in g lab groups for the semester. If s>g and if no student works in more than one group, which of the following calculations will determine approximately how many students should be in each lab group?

A) gs B) s-g C) g-s D) s/g

11) Tickets for a play cost $6 each for adults and $3 each for children. If 160 of these tickets were bought for a total of $816 how many adult’s tickets were bought? A) 110 B) 111 C) 112 D) 115

12) Let r◊s=rs+s for all integers r and s If r◊s =0 and s does not equal 0 , what must r equal?

A) -2 B) -1 C) 1 D) 2

13) The cells of a certain type of bacteria increase in number by each splitting into two cells every 30 minutes. At this rate, if a colony of this type of bacteria starts with a single cell, how many hours elapse before the colony contains 2 to the 11 power cells?

A) 5.5 Algebra and Function Practice

B) 5.7 C) 6.0 D) 7.5

14) Luis earns w dollars an hour for 3x hours and then earns y dollars an hour for x more hours. In terms of w,x, and y. how many dollars did he earn in all?

A) x(3w+y) B) x(w+3y) C) 4x(3w+y) D) 4x(w+3y) 15) If x-7=2y and x=5+3y what is the value of y?

A)-5 B) –2 C) 2 D) 5

16) If e+f=-1 then (e+f)² =?

A) -1 B) 0 C) 1/4 D) 1

17) If 2px3p=2/5x3/5 and p>0 what is the value of p?

A) 4 B) 6 C) .2 D) .1

18) If x² what are the possible values of x?

A) x>4 B) x<4 C) x<-4 or x>4 D) x>-4

19) Solve the system equations for x and y? –3x-2y=8 5x+y=3

A) x=4 and y=7 B) x=2 and y= -7 C) x=6 and y=2 D) x=4 and y=7 Algebra and Function Practice