Combining Like Terms
Simplify:
8v - 3v - 5w + 2v
7v - 5w
36 inches
Evaluate.
-(-8) to the 4th power
-4,096
Do the multiplication.(your answer need units)
26 miles per gallon times 17.5 gallons
455 miles
Simplify:
11y - 42x + 3x - 15y
-39x - 4y
A typist can type 100 words per minute. At this rate, how many words can the typist type in 40 minutes?
4,000 words
Evaluate.
50 - (-3)(-2)
44
Simplify.
6x + x + y + 4y
7x + 5y
Simplify:
3/5n + 1 + 3/5n - 1
6/5n
Sarah has a summer job at which she will earn $9 an hour working for 7 hours a day, 5 days a week, for 8 weeks. Calculate (and show the rate factors used) how much she will earn.
$2,520
Evaluate.
-7 * x *-1 * 7
Multiple choice. Suppose x is positive and y is negative. Then -xy is:
A. always positive
B. always negative
C. zero
D. sometimes positive, sometimes negative
A. always positive
Simplify:
-4(x - y) + (x - y)
-3x + 3y
The average speed of cyclists in the 2005 Tour de France was a record, 41.654 kilometers per hour. What was the average speed in miles per hour? (1 km = 0.62 miles)
25.83 mph
Evaluate. Write your answer as a fraction in simplest form.
(-2/3)(-3/4)(-4/5)
-2/5
Find the value of ab - cd when a = -1, b = -2, c = -3, and d = 4.
14
Simplify:
-5x(-x - 6y) - 7(3y - 8x)
In October 2005, 1 euro, the currency in much of Europe, had a value of about 1.20 U.S. dollars. The soccer player David Beckham's team, Real Madrid, was paying him 4.4 x 10 to the 6th power euros for the season. How many dollars is this?
$5,280,000
0*y+1*y+-1*y+0*1*-1
0
How many seconds are in a day?
86,400 seconds