Question

what is a formula, and give your own example?
answer the following questions using the formulas provided.
19
formula: ( p = 2 l + 2 w )
what is the perimeter of the rectangle?
the car driven at 70 mph for 12 hours.
formula: ( d = r t )
how far does the car travel?

Explanation:

Step1: Substitute values into the perimeter formula

Given \( l = 19 \) and \( w = 5 \), substitute into \( P=2l + 2w \).
\( P=2\times19+2\times5 \)

Step2: Calculate multiplication

\( 2\times19 = 38 \) and \( 2\times5=10 \). So \( P = 38+10 \)

Step3: Calculate addition

\( 38 + 10=48 \)

Step4: Substitute values into the distance formula

For the car problem, \( r = 70 \) (speed) and \( t = 12 \) (time). Substitute into \( d=rt \).
\( d=70\times12 \)

Step5: Calculate the product

\( 70\times12 = 840 \)

Answer:

The perimeter of the rectangle is \( 48 \). The car travels \( 840 \) miles.