1. The explicit form for a sequence is:

Question

an = 4n - 5 .
Write the first four terms in the sequence

2.Write the simplified explicit formula for the arithmetic sequence: -17,-11,-5,1,...

3. The Theater Department is selling tickets to their annual musical production. On the first da of ticket sales they sold 12 adult tickets and 22 student tickets for a total of $92. The schoo took in $40 on the second day by selling 5 adult tickets and 10 student tickets. Write a system of equations to model the situation.

4. Suppose you can work a total of no mare than 15 hours per week at your two jobs Cutting grass pays 10 per hour, and your bagging groceries job pays $7 per hour. You need to AT LEAST $85 per week to cover your expenses. Write a system of inequalities shows the various hours you can work at each job.

Answer 1

#1,2 were already done for you
#3.
12a+22s = 92
5a+10s = 40

#4.
c+b <= 15
10c+7b >= 85