Exercise 2: Concepts

CUTLERY

The knife shown below is 12 inches long. Write an expression that represents the length of the blade

$knife_blade.jpg$

POINTS (1)

Correct Answer

Explanation

SAVINGS ACCOUNTS

A student inherited $5,000 and deposits dollars in American Savings. Write an expression that represents the amount of money left to deposit in a City Mutual account

(5000 - x) $

x $

(5000 + x) $

$5000 \cdot x$ $

POINTS (1)

Correct Answer

Explanation

MIXING SOLUTIONS

Solution 1 is poured into solution 2. Write an expression that represents the number of ounces in the mixture

Solution 1 = 20 ounces

Solution 2 = x ounces

POINTS (1)

Correct Answer

Explanation

SNACKS

Cashews were mixed with p pounds of peanuts to make 100 pounds of a mixture. Write expression that represents the number of pounds of cashews that were used.

$(p + 100)$ pounds

$(100 - p)$ pounds

$(100 \cdot p)$ pounds

$(p - 100)$ pounds

POINTS (1)

Correct Answer

Explanation

BUILDING MATERIALS

Let b = the length of the beam shown below (in feet). The expression that represents the length of the pipe is (1)
Let p = the length of the pipe (in feet). The expression that represents the length of the beam is (2)

drag and drop the selected option to the right place

(b - 15) feet

(b + p) feet

(p + 15) feet

(b + p -15) feet

POINTS (1)