You estimate that a jar contains 68 marbles. the actual number of marbles is 60. find the percent error. round your answer to the nearest tenth.

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x