Answer: D. 3.50+4.00x≤20
Step-by-step explanation:
According to the question,
Total amount spent = (price of a pint of blueberries)+ (Price per pint of raspderries)(number of pints of raspberries)
Total amount he can spend must be less than or equal to $20
x=number of pints of raspberries
As per given,
[tex]3.50+4.00x\leq20[/tex], required equation
Hence, D is the correct option