Represent the following sentence as an algebraic expression, where "a number" is the letter x. Six times the sum of a number and 5.

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective