Answer:
250 minutes with the flat rate of $29.
x would be the number of minutes called.

Tracy would be charged by $0.35 per minute.


Answer:
A=254.34
Step-by-step explanation:
1. A=πr²
2. A=π(9)²
3. A=π(81)
4. A=3.14(81)
5. A=254.34
Formula for trapezoid area is A=b1+b2 x heightx 1/2 so your answer would be 161m squared
Answer:
23
Step-by-step explanation:
3.47 = 3 sig. figs.
6.7 = 2 sig. figs.
Since these two numbers are being multiplied, you would round to the smallest number of sig. figs. of the two. In this case, it would be 2 significant figures.
3.47 * 6.7 = 23.249 (dont forget to round to 2 sig. figs. ) --> 23
7 because 7•3=21 and if he has as twice much as you 7•2=14 & 14+7=21 books together