If a student wanted to design an experiment that uses sound scientific principles which of the following should he or she not do -start with a hypothesis -test more than one variable at a time -record data in a table -compare results with others

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

Solve the formula ax+ by = c for x.

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?