Michael’s family wants to sign up for a movie rental service. They have information on DVD plans from four different companies. The family plans to watch 15 DVDs per month. Which plan is the best? Question 18 options:

A. All-You-Can Watch DVD; Pay $5 for each DVD you order

B. DVD Land; Pay $60 per month for unlimited amount of DVD rentals

C. DVD-R-US; Pay $25 to join and $2 for each DVD, d, ordered

D. Cheap DVD; Pay $20 to join and $2.50 for each DVD, d, ordered

1. 8

2. 9

3. 20

4. 3

5. 17

6. 2.2

7. 11.25

8. 1

9. 14

10. 2

step-by-step explanation:

thats the first half

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752