you are at a baseball game and bought food for you and your friends. hot dogs cost $1.50 each and chips are $0.75. you spent $20.25 total and got a total of 19 items. How many hot dogs did you buy?

Step-by-step explanation:

x + y = 19

1.5x + .75y = 20.25

x + y = 19

150x + 75y = 2025

-150x - 150y = -2850

150x + 75y = 2025

-75y = -825

y  =  11 bags of chips

x + 11 = 19

x = 8 hot dogs

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'.