Solve.
2.50 +7.75 = 4 + 3.75d
The solution is d =

d  = 1.7    

Step-by-step explanation:

Given expression:

    2.50 +7.75 = 4 + 3.75d

Problem:

    Solve for d;

Solution:

Collect all like terms to the same side;

        2.50 + 7.75 - 4  = 3.75d

        6.25 = 3.75d

 Divide through by 3.75 to find d;

        d  = 1.7    

x=12 units bd= 10 units

step-by-step explanation:

b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.