The school that stefan goes to is selling tickets to a choral performance. on the first day of ticket sales
the school sold 1 senior citizen tickets and 13 child ticket for a total of $128. the school took in $166 on
the second day by selling 11 senior citizen tickets and 5 child tickets. find the price of a senior citizen
ticket and the price of a child ticket.

The Answer is: The cost of senior citizen tickets: $11. The cost of children tickets: 9.

Step-by-step explanation:

Let s = cost of senior tickets and c = cost of child tickets.

The total dollar amount is equal to the number of senior and adult tickets sold times the amount for each. Equations below:

Day 1:

13c + 1s = $128

Solve for s:

s = 128 - 13c

Day 2

5c + 11s = 166

By substitution, then solve for c:

5c + 11(128 - 13c) = 166

5c + 1408 - 143c = 166

-138c = -1242

c = -1242/-138 = 9 dollars for child tickets.

Solve for s:

s = 128 - 13c

s = 128 - 13(9)

s = 128 - 117 = 11 dollars per senior tickets.

Proofs:

Day 1:

13c + 1s = $128

13(9) + 1(11) =

117 + 11 = 128

128 = 128

Day 2:

5c + 11s = 166

5(9) + 11(11) = 166

45 + 121 = 166

166 = 166

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.

it would take 7/10 of an hour too fill the pool.

step-by-step explanation: