add the numbers on both side by 3
4 + 3 = 7
8 + 3 = 11
rewrite the expression
7<11
that is still true
do the same by multiplying it by 2 and rewrite the inequality
Answer:
1. 1.02, 1.07, 1.24, 1.33
2. 1.01, 1.06, 1.2, 1.42
3. 0.8, 0.87, 0.98, 1.23
4. 0.06, 0.5, 1.4, 1.23
Step-by-step explanation:
Answer:
2485
Step-by-step explanation:
The number of seats in row n is given by the explicit formula for an arithmetic sequence:
an = a1 +d(n -1)
an = 20 +3(n -1)
The middle row is row 18, so has ...
a18 = 20 + 3(18 -1) = 71 . . . . seats
The total number of seats is the product of the number of rows and the number of seats in the middle row:
capacity = (71)(35) = 2485
The seating capacity is 2485.
9-n would be the proper equation
