462 algebra De mystif ieD
DeMYSTiFieD / algebra DeMYSTiFieD / gibilisco / 000-0 / appendix
(^312)
x
A. −x23/ B. x−32/ C. x−23/ D. −x32/
A spirit club raises money by selling hamburgers at football games. They
want to avoid handling change, so they want the hamburger to cost $5
after adding 712 % sales tax. What should they charge for the hamburger?
A. $4.65 B. $4.70 C. $4.75 D. $4.80
45 xy−−^23 ()xy^43 +−xyxy 2123 − +=
A. 20 xy−−^11 +− 48 xy−−^64 xx+ 4 23 y B. 20 xyxy+− 4842 yx+ 4 −y^3
C. 20 xy−−^11 +− 48 xy^42 + 4 xy−^3 D. 20 xy^37 −+ 42 xy^54 xy^46 − 4 xy^23
Fat free milk and whole milk (4%) will be mixed together to produce
5 gallons of 1% milk. How much fat free milk will be used?
A. 3 gallons B. 3.25 gallons C. 3.50 gallons D. 3.75 gallons
7
14
43
24
xy
xy
−
− =^
A. x
y
2
2 2 B.^
1
2
1
⋅xy 2 C.
1
2
xy^21 − D. 1
2
1
⋅xy 812
- 2
21
3
xx^22 ()++xx()xx^254
−
++
=
A. −−+
++
38
14
2
22
xx
xx()()x
B. −++
++
358
14
2
22
xx
xx()()x
C. −+
++
x
xx x
5
(^22) () 14 ()
D. −+
++
x
xx x
11
(^22) () 14 ()
- The diameter of a rectangular room is 29 feet. The room is 1 foot longer
than it is wide. How wide is the room?
A. 20 feet B. 21 feet C. 22 feet D. 23 feet - If 56 xx^2 +−= 80 , then
A. x=−^25 4, B. x=− 52 4, C. x=−^45 2, D. x=−^45 2,