Every time Mary bakes a batch of brownies, she uses 1/5 cup of chocolate. If she has 8/10 cup(s) of chocolate remaining, how many batches of brownies can Mary make? Input your answer as a whole number. giving 35 points if u answer.

Step-by-step explanation:

Number of cups of chocolate is directly proportional to the number of batches of brownies.

1/5 cups of chocolate = 1 batch of brownies

=> 8/10 cups of chocolate = (8/10) / (1/5)

= 4 batches of brownies.

Hence Mary can make 4 more batches.

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation: