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 or type it instead

(b - 15) feet

(b + p) feet

(p + 15) feet

(b + p -15) feet

POINTS (1)