1. Emily filled an empty horse trough with water. The water level, in centimeters, is proportional to time elapsed, in minutes, since she began filling the trough. The graph shows this relationship. Water Trough Level у 35 30 y = 3.5x 25 (8, 28) (6, 21) Water level (cm) 20 h 15 + 10 + 5 (0,0) 0 2 3 4 5 8 9 10 (1, 3.5) 6 7 Time (min) (a) Identify the constant of proportionality: (b) Identify the unit rate: PER (c) Explain what (8, 28) means in terms of the graph. Use a complete sentence! (d) What would the water level be after 20 minutes (hint: use a proportion!)?

Pls can someone answer this question I really need help

Step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!