Show how you arrived at your estimate.

Round each number to make it easier to multiply.

So in the case of the wedding, 19 to 20 and 8 to 10. 20 * 10 = 200. 200 forks can be your estimate.

As for your shopping problem, round $3.99 to $4 and $0.89 up to $1.  $4 * 8 = $32 and $1 8 8 = $4. So my estimate would be they spent about $36.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

answer: sine

step-by-step explanation: