Apainter charges $225 for materials and $35 per hour. the total cost is $330. how much hours did it take the painter to paint the office?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is