Strawberries are on sale for $0.75 a pound, and you have a coupon for $0.40 off your total purchase. Write a function rule for the cost of n pounds. How much would 20 pounds of strawberries cost?(1 point)
Responses
y= 0.75x ; $15
y= 0.75x ; $15
y= 0.75x - 0.40 ; $14.60
y= 0.75x - 0.40 ; $14.60
y= (0.75-0.40)x ; $7
y= (0.75-0.40)x ; $7
y= 0.4x - 0.75 ; $7.25
The correct function rule for the cost of n pounds would be:
y = 0.75n - 0.40
To calculate the cost of 20 pounds of strawberries, you would substitute n = 20 into the function rule:
y = 0.75(20) - 0.40
y = 15 - 0.40
y = $14.60
Therefore, 20 pounds of strawberries would cost $14.60.