On the treadmill, Bethany walks at a rate of 3 steps every 2 seconds. At this rate, how many seconds will it take Bethany to walk 60 steps?

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of