Devon is buying 3 greeting cards that cost $0.97 each. How can rounding be used to estimate the total cost of the cards? Since each card is about $1, the total cost is approximately 3 + 1 = $4. Since each card is about $1, the total cost is approximately 3 × 1 = $3. Since he is buying about 10 cards, the total cost is approximately 10 × 0.97 = $9.70. Since he is buying about 10 cards, the total cost is approximately 10 + 0.97 = $10.97.

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

step-by-step explanation:

use context clues to figure out the meaning of the bolded word:  

the sage gardener knew when she had to water her plants.  

question 8 options:

mint plant

wise

happy

lazy

step-by-step explanation:

what does 'mandy have ben 780 bottle caps. ' mean?

it should be described as a proper fraction.