Answer:
Step-by-step explanation:
The monthly cost is C(t) = 6 + 0.05t, where t is the number of minutes talked.
Talking for 8 hours would cost C(t) = 6 + 0.05(8), or $6.40;
Talking for 20 hours would cost C(20) = 6 + 0.05(20), or $7.00.
The effective cost per minute in the first case is $6.40/8 min = $0.80/min, and that in the second case is $7.00/20 min = $0.35/min
Answer:
its B 75.85
Step-by-step explanation: the reason is because if you add 15.67 x 3 + 24.55 + 6% (witch you can do on any apple, amazon, or windows home device) it gives you 75.8536 witch is just 75.85
Answer:
30 Alyssum, 15 Bells of Ireland, and 15 Calendula
Step-by-step explanation:
the larger triangle has angles of 75° and 55°.
the smaller triangle has angles of 75° and 55°.
the triangles are similar by AA.
Answer:
351 adults and 275 students
Step-by-step explanation:
We can set-up a system of equations to find the number of adults. We know students and adults attended. We will let s be the number of students and a be the number of adults. Since 626 tickets were purchased, then s+a=626.
We also know that 74 fewer student tickets then adult tickets. So s+76=a, the number of student tickets plus 76 will be the number of adult tickets.
We will solve by substituting one equation into the other. We substitute a=76+s into s+a=626. Simplify and isolate the variable a.
s+a=626
s+76+s=626
2s+76=626
2s+76-76=626-76
2s=550
s=275
This means that 275 students attended and 351 adults attended since 275+351=626.
