La derivada de F(x)=13x-6 F´(4)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

What are the domain and range of the function f(x)=2^x+1

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )