What is the answer? And how do I Solve, you get brainiest if you show steps clearly.

Step-by-step explanation:

solution,

given

DF = 42

DE = 7x+1

EF = 4x-3

DE = ?

here,

or, DF = DE +EF

or, 42 = 7x+1+4x-3

or, 42 = 11x-2

or, 42+2 = 11x

or, 44/11 = x

or, 4 = x

then,

replacing value of x in DE

DE = 7x+1

= 7*4+1

= 28+1

= 29

5 1/3 grams per serving

Step-by-step explanation:

Find the unit rate. 4 grams for every $\frac{3}{4}$ serving The unit rate is grams per serving.

The unit rate in grams per serving is given as:

3/4 servings = 4 grams

1 servings = x grams

Cross Multiply

x grams = 4 grams × 1 serving/3/4 serving

x grams = 4 grams ÷ 3/4 servings

x grams = 4 grams × 4/3 servings

x grams = 16/3

x grams = 5 1/3 grams per serving

The unit rate = 5 1/3 grams per serving