In 1870 the average ground temperature in paris was 11.8°c. since then it has risen at a nearly constant rate, reaching 13.5°c in 1969.
(a) express the temperature t (in °c) in terms of time t (in years), where t = 0 corresponds to the year 1870 and 0 ≤ t ≤ 99.

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position