Writing expressions
Maria charges $20 per hour to fix computers.
Which equation represents the cost of fixing n computers?
20n
Simplify 6 + x + 9
15 + x
5 + 3 x 2
11
Carlos is trying to read 12 pages of his book a night. The book has 156 pages. How many days will it take him to finish the book?
12x=156, x=13 days
The ratio of union to non-union employees at Bob's Builders is 7 to 2. If there are 22 non-union workers in the company, how many employees belong to the union?
77
Velen charges $10 per hour plus a $30 service fee to fix computers. Which equation represents the cost to work n number of hours
10n +30
Simplify x + 2 + 8x
9x + 2
(5 + 3) x 2
16
Jose has saved $55 toward the purchase of an ipod. The iPod costs $145. Write and solve an equation to represent the amount Jose needs to save to buy the iPod.
55+x=145, x=$90.00
Only 2 out of every 15 Math majors at a certain university were female. If there were 45 math majors at the university, how many were male?
39
4 times the sum of a number and 8
4(n+8)
Simplify 4x + 3y + 23y
4x + 26y
20 / 5 x 2 -1
7
Lacreshia went to the mall and spent $35.00 on shoes. When she left she had $40.00 in her purse. How much money did she start with?
$75
Mike prints 480 photos in 6 hours. How long will it take him to print 160 photos?
2 hours.
product of a number and 9 is subtracted from 20
20-9x
8x + 17y + 9x
17x + 17y
[12 + (14÷7)] - 9
5
After paying $5.00 for a salad, Tierra has $27.00. How much money did he have before buying the salad?
$32
A fish was located 4 feet below sea level and then descended at a rate of 2 feet per second. How far below sea level is the fish after 3 seconds?
10 feet below sea level
the quotient of a number and 2 is subtracted from 8
8 - x/2
Simplify 8(a + 5b + 4)
8a + 40b + 32
[(8 + 13) x 6] - 27 ÷ 3
117
What is the sum of nine-hundredths of $1.00, one-fourth of $1.00 and 20% of $10.00?
$2.34
If one-tenth of a dime, on-tenth of $1.00 and one-tenth of $10.00 are subtracted from $5.00, how much money is left?
$3.89