In the expression –x + 4 –2x +2
Name the following:
a. coeffecient(s)
b. constant(s)
c. like term(s)
a. coeffecients: –1, –2
b. constants: 4, 2
c. –x and –2x, 4 and 2
200
Solve: 18 = –r + 7
r = –11
200
Find the missing length of a side of a right triangle whose perimeter is 12 ft. The length of the two sides are 3 ft. and
4 ft.
Use s as the variable
s = 5 ft.
200
Solve: m/11 = –6
m = –66
200
–9b = 81
b = –9
300
Write the verbal phrase as a variable expression using the variable z:
the quotient of 9 and a number less than 11
11 - z/9
300
Solve: –2a – 12 = –3a + 3
a = 15
300
Find the missing side of the rectangle:
Perimeter = 12.3 inches
side1 = 3.9 in
side2 = 2.6 in
side3 = 2.7
side4 = ?
Use s as the variable.
s = 3.1 inches
300
Solve: –y/9 = 34
y = –306
300
Solve: –14b = 8
b = –4/7
400
Simplify: 3(5 + 4b) – 2
12b + 13
400
Solve: t – 1/5 = 3/10
t = 1/2
400
A paperback version of a book costs $17.10. This cost is $2.89 less than the cost of the hardcover version. Write and solve an equation to find the hardcover cost of the book.
Use b as the variable.
b = $19.99
400
It costs you $1.96 for four pounds of bananas. Write and solve an equation to find the cost of bananas per pound.
Use b as the variable.
b = 0.49
400
Solve: –6 = 3/8r
r = –16
500
Simplify: 6(3 – 2z) + 11z – 4
–z + 14
500
Solve: 8 less than a number is –15
Use x as the variable.
x = –7
500
The left- and right-hand margins on a paper are both 1.25 inches wide. The width of the paper is 8.5 inches. Write and solve an equation to find the width of the text area between the margins.
Use w as the variable.
w = 6 inches
500
In a survey about favorite books, 1/4 of the total number surveyed which is equal to 39, said that they liked mystery. Write and solve an equation to find the total number of people surveyed.
Use p as the variable
p = 156
500
You get paid $8.50 per hour for your job. Write and solve an equation to find the number of hours you have to work to earn $102.
Let h = hours you have to work