The floor of a canyon has an elevation of −14.5feet. erosion causes the elevation to change by −1.5 feet per year. how many years will it take for the canyon floor to have an elevation of −31

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?

What percent of 18 is 24? and plz explain thx.

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.