HEELP! NEED WORK! A stadium with 75 rows has 10 seats the 1st row, 15 in the 2nd, 20 in the 3rd and so on.
How many seats are in the 75th row? How many seats are in the stadium?

380

Step-by-step explanation:

This is an airthmatic sequence

we can use the following equation to find the nth term

a₁+(n-1)d

where the common difference (d) is 5

and the first term (a₁) is 10

and n is 75

we have

10+(75-1)*5

10+370

380

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24