A pump lifts 2 cubic meters of water through a pressure difference of 200000 N/m2 find the work done by the pump - btw this tech work also

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9