Your teacher decided to redecorate some rooms at home. she purchased two throw pillows for $9.99, paint for $38.50 and some paint brushes for $8. the total cost was $82.48. how many paint brushes did she purchase?

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

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

The expression 1.01*1.005(^t) gives the amount of money, in thousands of dollars, in carter's savings account (t) years after he opens it. what does 1.01 represent in this expression?