# Worksheet: Writing and Evaluating Formulas

In this worksheet, we will practice distinguishing between formulas and expressions, writing a formula from a given description, and substituting numbers into a simple formula.

Q1:

Use the formula to find the area of a parallelogram whose base, , is and height, , is .

• A
• B
• C2
• D
• E

Q2:

One measure of distance is rate multiplied by time, . Find the distance Olivia travels if she is moving at a rate of 60 mph for 6.75 h.

Q3:

Given that the area of a trapezoid is , find the value of when , , and .

Q4:

A company produces greetings cards with an initial cost of 2,000 LE and an extra cost of per card. The total cost is given by , where is the number of produced cards. Find the total cost of producing 15,000 cards.

Q5:

The total surface area, , of a rectangular prism is given by . Find the value of when , , and .

Q6:

The speed , in feet per second, of an ocean wave at depth , in feet, is given by the formula . Determine, to the nearest tenth, the speed of an ocean wave at a depth of 11 feet.

Q7:

A rectangle has width and length . A new rectangle is formed which has the same length but double the width. Find the perimeter and area of this new rectangle.

• A,
• B,
• C,
• D,
• E,

Q8:

The diameter of a circle with area is given by . Determine, to the nearest tenth, the diameter of a circle with an area of 46 in2.

Q9:

Daniel drove his car for 7 hours at 50 miles per hour. Use the formula , where , , and , to find the distance he drove.