How many solutions are there to this
system of equations?
y= -1/2x+1 and y=x^2-2

At a lunchron, guests are offered a selection of five different grilled vegetables and four different meats. in how many waya could one choose three vegetables and two meats?

Can (2,3 and square root 10) be sides ona right triangle?

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.