Express 0.000834 in standard form

Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

Find the maximum value of p= 4x + 5y subject to the following constraints :