Abasic cellular phone plan costs $30 per month for 50 calling minutes. additional time costs $0.50 per minute. the formula c 30 +0.50(x - 50) gives the monthly cost for this plan, c, for x calling minutes, where x> 50. how many calling minutes are possible for a monthly cost of at least $35 and at most $40? for a monthly cost of at least $35 and at most $40 sxs calling minutes are possible s

Step-by-step explanation:

Given that a basic cellular phone plan costs $30 per month for 50 calling minutes

i.e. C(x) = , where x = calling minutes

Here 30 is fixed upto 50 calls after that cost increases at 0.50 per minute talk time.

When monthly cost is atleast 35 and atmost 40 we have

i.e. talking time must be atleast 60 minutes and atmost 70 minutes

idk this answer sorry cant on this one.

step-by-step explanation:

question

given the diagram below, what is md?

the sum of the interior angles is 360°

take away from 360 the sum of the knows angles and you will have the angle d.

360 - 108 - 108 - 72 = 72°