Chapter 7 Quiz (6th)

Write the word sentence as an equation.
A number x decreased by 3 is 5.

• x - 3 = 5
• x = 3 - 5
• x + 3 = 5
• x - 5 = 3

Solve the equation.
4 + k = 14

• k = 18
• k = 10
• k = 9
• k = 19

Solve the equation.
3.5 = m - 2.2

• m = 5.7
• m = 1.3
• m = 6
• m = 2.2

Solve the equation.
8 = ^4w/₃

• w = 5
• w = 6
• w = 7
• w = 4

Solve the equation.
31 = 6.2 ⋅ y

• y = 6
• y= 8
• y = 5
• y = 24.8

Is the ordered pair a solution of the equation?
y = 3x + 4; (4, 16)

• Yes
• No

Write an equation in two variables that shows the relationship between the time and the distance traveled.
Rises 4 feet in 9 seconds⋅

• d = ⁴/₉ ⋅ t
• d = 9t -4
• d = 4t -9
• d = 5t

A sundae costs $2. Additional toppings cost $0.50 each. Write and graph an equation in two variables that represents the total cost of the sundae.

• s = 2t + 0.5
• s = 2 + 0.5t
• s + 2 = 0.5t
• s = 2.50 + t