Answer:
a) B=950d
b) 23,750 lightbulbs
Step-by-step explanation:
a) You know that he makes 950 lightbulbs a day, therefore in "d" days, 950d lightbulbs will be produced.
b) Using the equation found in part A, find the number of lightbulbs for 25 days by plugging 25 in for the variable "d"
B=950d
B=950(25)
B=23,750 lightbulbs