Step-by-step explanation:
T78 = 5 + (78-1)(3)
= 5 + 77(3)
= 5+231
= 236
c. 35 + 50x ≤ 1,325
Step-by-step explanation:
Abbey's total cost must be less then or equal to her total savings, i.e.
cost ≤ savings
it is given that cost = fixed registration fee and a monthly fee of $50 per month. Hence,
fixed registration + (monthly fee)*(number of months) ≤ savings
let the number of months be x,
hence
35 + 50x ≤ 1325(c)
its (a) because (a) is C(x)=3x4+30x and 9+21 is 30 so its 3x2+30
Answer:
10 + 5x
Step-by-step explanation: