Our skating club is going on a field trip. To cover the cost of the trip we are collecting \$8$8dollar sign, 8 from each of the 999 members of the club. We also raised \$178$178dollar sign, 178 at a car wash.

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet

Find the value of x. give reasons to justify your solutions! c ∈ ae