Question

ariane feeds her kitten k grams of food 2 times in the morning and 2 times in the evening. she feeds her dog d grams of food 1 time in the morning and 1 time in the evening.
which expressions can we use to describe how many grams of food ariane feeds her animals per day?
choose 2 answers:
a ( 4(k + 2d) )
b ( 2d + 4k )
c ( (2k + d) + (2k + d) )
d ( (k + d)2 )
e ( (4 + 2) cdot (k + d) )

Explanation:

Step1: Calculate food for kitten

Kitten: 2 times morning + 2 times evening = 4 times. Each time \( k \) grams, so total for kitten: \( 4k \) grams.

Step2: Calculate food for dog

Dog: 1 time morning + 1 time evening = 2 times. Each time \( d \) grams, so total for dog: \( 2d \) grams.

Step3: Total food per day

Total = kitten + dog = \( 4k + 2d \), or rearranged as \( 2d + 4k \) (Option B). Also, morning total: \( 2k + d \), evening total: \( 2k + d \), so total is \( (2k + d)+(2k + d) \) (Option C).

Answer:

B. \( 2d + 4k \), C. \( (2k + d)+(2k + d) \)